Aiphone LEF3510 Instructions User Manual

							– 1 –
LEF Series
OPEN VOICE SELECTIVE CALL INTERCOM
INSTALLATION & OPERATION MANUAL
LEF-3 (3-call master)
LEF-5 (5-call master)
LEF-10 (10-call master)
LEF-10S (10-call master w/all call button)
Models:
* LEF-5W, LEF-10W & LEF-10SW: 
w/Terminal Box prewired
(Not available in North America)
PRECAUTIONS
WARNING (Negligence could result in death or serious injury.)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Do not dismantle or alter the unit. Fire or electric shock could result.\
Keep the unit away from water or any other liquid. Fire or electric shoc\
k could result.
For power supply, use Aiphone power supply model specified for use with \
system. If non-specified product is used, fire or malfunction 
could result.
Do not connect any non-specified power source to the +, - terminals. Als\
o, do not install two power supplies in parallel to a single input. 
Fire or damage to the unit could result.
Do not use power supply with a voltage other than specified. Fire or ele\
ctric shock could result.
Keep AC cord from being marred or crushed. If the AC cord is damaged, fi\
re or electric shock could result.
Do not plug or unplug unit with wet hands. Electric shock could result.
Insert AC plug completely and securely into AC outlet. Otherwise, fire o\
r electric shock could result.
Periodically check for and remove dust on the power plug. If dust is lef\
t, it could cause the power plug to heat up, resulting in fire.
Do not put any metal or flammable material into the unit through the ope\
nings. Fire, electric shock, or unit trouble could result.
1.
2.
3.
4.
5.
6.
7.
CAUTION (Negligence could result in injury to people or damage to property.)
Do not install or make any wire terminations while power supply is plugg\
ed in. It can cause electrical shock or damage to the unit.
When mounting the unit on a wall, install the unit in a convenient locat\
ion, but not where it could be jarred or bumped. Injury could result.
Before turning on power, make sure wires are not crossed or shorted. If \
not, fire or electric shock could result.
Do not place or install the unit in the locations subject to frequent vi\
bration or impact. If the unit falls, injury to people or damage to the 
unit could result.
Do not put anything on the unit or cover the unit with cloth, etc. Fire \
or unit trouble could result.
Do not install the unit in any of the following locations. Fire, electri\
c shock, or unit trouble could result.
*  Places under direct sunlight (except door station). 
*  Near heating equipment that varies in temperature.
*  Places subject to dust, oil, chemicals, hydrogen sulfide (hot spring).\
*  Places subject to moisture and humidity extremes, such as bathrooms, cel\
lars, greenhouses, etc.
*  Places where the temperature is quite low, such as inside a refrigerated\
 area or in front of an air conditioner.
*  Places subject to steam or smoke (near heating or cooking surfaces).
*  Where noise generating devices such as dimmer switches or inverter elect\
rical appliances are closeby.
*  Locations subject to frequent vibration or impact.
*  Locations subject to extremely powerful electric fields.
The unit must be installed and wired by a qualified technician.
1.
2.
3.
4.
5.
6.
7.
8.
9.
GENERAL PRECAUTIONS
Keep the unit more than 1m (3.3) away from radio or TV sets.
Keep the intercom wires more than 30cm (12)  away from AC 100-240V w\
iring. AC induced noise and/or unit malfunction could result.
Comply with all third party manufacturing specifications that will be us\
ed with this system.
Using a mobile phone or professional-use radio equipment such as walkie-\
talkie close to the system may cause a malfunction.
The unit can be damaged if dropped. Handle with care.
The unit will not work during power failure.
In areas where broadcasting station antennas are closeby, the intercom s\
ystem may be affected by radio frequency interference.
All the units, except for door stations, are designed for indoor use onl\
y. Do not use at outdoor locations.
This product, providing door release, should not be used as a crime prev\
ention device.
         Prohibited                         Do not dismantle unit           \
               Keep unit away from water                         General precautions  
						

							– 1 –
LEF Series
OPEN VOICE SELECTIVE CALL INTERCOM
INSTALLATION & OPERATION MANUAL
LEF-3 (3-call master)
LEF-5 (5-call master)
LEF-10 (10-call master)
LEF-10S (10-call master w/all call button)
Models:
* LEF-5W, LEF-10W & LEF-10SW: 
w/Terminal Box prewired
(Not available in North America)
PRECAUTIONS
WARNING (Negligence could result in death or serious injury.)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Do not dismantle or alter the unit. Fire or electric shock could result.\
Keep the unit away from water or any other liquid. Fire or electric shoc\
k could result.
For power supply, use Aiphone power supply model specified for use with \
system. If non-specified product is used, fire or malfunction 
could result.
Do not connect any non-specified power source to the +, - terminals. Als\
o, do not install two power supplies in parallel to a single input. 
Fire or damage to the unit could result.
Do not use power supply with a voltage other than specified. Fire or ele\
ctric shock could result.
Keep AC cord from being marred or crushed. If the AC cord is damaged, fi\
re or electric shock could result.
Do not plug or unplug unit with wet hands. Electric shock could result.
Insert AC plug completely and securely into AC outlet. Otherwise, fire o\
r electric shock could result.
Periodically check for and remove dust on the power plug. If dust is lef\
t, it could cause the power plug to heat up, resulting in fire.
Do not put any metal or flammable material into the unit through the ope\
nings. Fire, electric shock, or unit trouble could result.
1.
2.
3.
4.
5.
6.
7.
CAUTION (Negligence could result in injury to people or damage to property.)
Do not install or make any wire terminations while power supply is plugg\
ed in. It can cause electrical shock or damage to the unit.
When mounting the unit on a wall, install the unit in a convenient locat\
ion, but not where it could be jarred or bumped. Injury could result.
Before turning on power, make sure wires are not crossed or shorted. If \
not, fire or electric shock could result.
Do not place or install the unit in the locations subject to frequent vi\
bration or impact. If the unit falls, injury to people or damage to the 
unit could result.
Do not put anything on the unit or cover the unit with cloth, etc. Fire \
or unit trouble could result.
Do not install the unit in any of the following locations. Fire, electri\
c shock, or unit trouble could result.
*  Places under direct sunlight (except door station). 
*  Near heating equipment that varies in temperature.
*  Places subject to dust, oil, chemicals, hydrogen sulfide (hot spring).\
*  Places subject to moisture and humidity extremes, such as bathrooms, cel\
lars, greenhouses, etc.
*  Places where the temperature is quite low, such as inside a refrigerated\
 area or in front of an air conditioner.
*  Places subject to steam or smoke (near heating or cooking surfaces).
*  Where noise generating devices such as dimmer switches or inverter elect\
rical appliances are closeby.
*  Locations subject to frequent vibration or impact.
*  Locations subject to extremely powerful electric fields.
The unit must be installed and wired by a qualified technician.
1.
2.
3.
4.
5.
6.
7.
8.
9.
GENERAL PRECAUTIONS
Keep the unit more than 1m (3.3) away from radio or TV sets.
Keep the intercom wires more than 30cm (12)  away from AC 100-240V w\
iring. AC induced noise and/or unit malfunction could result.
Comply with all third party manufacturing specifications that will be us\
ed with this system.
Using a mobile phone or professional-use radio equipment such as walkie-\
talkie close to the system may cause a malfunction.
The unit can be damaged if dropped. Handle with care.
The unit will not work during power failure.
In areas where broadcasting station antennas are closeby, the intercom s\
ystem may be affected by radio frequency interference.
All the units, except for door stations, are designed for indoor use onl\
y. Do not use at outdoor locations.
This product, providing door release, should not be used as a crime prev\
ention device.
         Prohibited                         Do not dismantle unit           \
               Keep unit away from water                         General precautions 
– 2 –
2 NAMES & FEATURES
LEF-3
LEF-5, 10, 10S1 Speaker
2  Call-in LED (3)
3  Station-Select button (3)
4  Voice volume control
5  OFF button (w/ON LED)
6  Microphone (initiator only)
7  In-use LED (occupied)
8  Privacy button & LED indicator
9  Talk (listen) button
 1  Speaker
  2  Call-in LED (5 or 10)
  3  Station-Select button (5 or 10)
  4  Voice volume control
  5  In-use LED (occupied)
  6  All Call transmit button & LED (LEF-10S only)
  7  Door release button
  8  Microphone (initiator only)
  9  OFF button (w/ON LED)
 10  Privacy button & LED indicator
 11  Talk (listen) button
 
 LEF-5:  5 station buttons and OFF.
  Names & functions
 
Components available
•  Intercoms: Masters or subs, intermixable
Master stations Sub stationsPower supply
LEF-33-callLEF-55-callLEF-1010-callLEF-10S10-callw/all call button
LE-DSurface mt.LE-DAFlush mt.LE-A
LE-AN
1-call(w/Priv.)
PS-1225UL 
PS-1225S
PS-1225
12V DC, 2.5A power supplyPS-1215DIN, 12V DC, 1.5A
•  Additional Sub stations:
LE-DL:  Surface-mount w/anodized aluminum panel
 AH-108 8Ω horn speaker w/ LT-1 matching 
transformer & NP-25V (33μfd,bp,25V) • 
All Call & Background Music (with LEF-10S):
BG-10C:  All call, chime & music adaptor.
1 SYSTEM OUTLINE & COMPONENTS
 System outline
The LEF is a flexible Open Voice Selective Call Intercom system which in\
tegrates any combination of master and 
sub stations.  The system features selective calling from any master wit\
h handsfree reply, call-in and LED from a 
variety of sub stations, selective door release (except LEF-3), and a \
variety of other optional features.
•  LEF intercom (LEF-3, 5,10 or 10S)  •  Packet of screws  • Installation & Operation Manual •  China RoHS paper
  Package contents
1
6
7
8
9
2
3
45
1
23OFFOCCUPIEDPRIV
TALKCALL
1234 56 78 910OFF
OCUPIED
VOICE VOL
PRIV
ALL CALL TALK
CALL
1
2
3
4
5671011
8
9 
						

							– 3 –
 Features
•  Four LEF master stations, intermixable.
CapacityDoor release
All Call transmit
4 stations
6 stations X
11 stations X
Models
LEF-3
LEF-5
LEF-10
LEF-10S 11 stations XX
• Optional features:
*  All Call, chime & Music distribution (w/ BG-10C adaptor, LEF-10S only)
*  Selective door release (w/ RY-PA relay, 1 per door, excluding LEF-3)
* 8  Ω horn speaker ( AH-108 w/LT-1 transformer & NP-25V capacitor)
*  External signaling when door/sub calls (w/ RY-AC/A and external device)
WIRING:
•  Loop-wired system with multi-conductor shielded cable.
All-master system : 4 common wires + 1 wire per number of stations in the system.
If All Call is included :  Add 4 additional common wires ( P1 ~ P3 , Y ).
If Door Release is included (LEF-5/10/10S) :  Add 1 common  L  + 1 individual wire 
for each door to be released (  K#  terminals).
Single-master system :  2 wires homerun* from each sub to the master.
Leave jumpers between  E  &   –
  installed.
*NOTE: It is recommended even in a single master system that 3 wires are used for 
all sub stations in the system, and that the  E  &   –
  jumpers are removed. This ensures 
that the wiring is proper in the event of system expansion in the future. 
Intermixed system  with masters and subs:  3 wires from each sub to the nearest 
master, or 2 common + 1 individual wire per station on a loop.  Remove jumpers 
between  E  &   –
  from all stations in a multi-master system.
Model # # of Conductors Wire # (22AWG)Wire # (18AWG) # of Conductors Wire # (22AWG)
LEF-1C12
822212 xx x
LEF-3C12822212 xx x
LEF-5C15822215 x20822220
LEF-10C20 822220 x30822220 + 822210
LEF-39 822210 xx x
LEF-512822212 x20822220
LEF-1020 822220 x30822220 + 822210
LEF-10S20 822220 x30822220 + 822210
LE-A3 822203 821803 xx
LE-B3822203 821803 xx
LE-D3822203 821803 xx
LE-DA3822203 821803 xx
With selective door release and/or camera
call-up (incl.  K  wires b/n masters, max.)
Standard Communication (Max. # of stations)
  Wire Reference Chart
Speaker
CALL
LE-D
LE-DA
Speaker
CALLLE-DA
Speaker
CALL
LE-A, 1-call
LE-AN, w/ PRIVACY
Speaker
CALLPRIV. 
						

							– 4 –
To remove the operation
plate, push either left or
right side of the plate.
3 MOUNTING
•  LEF-3•  LEF-5, 10, 10S•  LE room subs
 Slide LE sub down until it locks onto the prongs. 1, 2 : When running cable on the surface, pass cable through the top or \
bottom of 
the chassis and fasten with the wire clamps (attached, one outside and \
one 
inside chassis.).
 Wall-mounting
1.   Remove the operation plate by pressing down on one 
side and lifting off from the middle. Remove the paper 
directory card as well, and set aside with operation plate. 
2.   Loosen the two screws
※ in the front case.  (Do not 
remove screws from front case.)
3.   Disconnect LEF intercom from the chassis by carefully  unplugging the connectors.
4.   Mount the back chassis to a single-gang box.
5.   Terminate wires on screw  terminals inside the chassis.
6.   Reconnect intercom with connectors and mount to  chassis, tightening the two screws
※. Replace the 
directory card and the operation plate. (Make sure the 
operation plate is under the small tab at the top when 
reinstalling.) Peel protective covering off of operation 
plate.
※ LEF-3 is one screw.
 Desk mount with LEW Desktop Terminal Box
1.   Plug in CN1 & CN2 connectors of LEW-5, LEW-10, or  LEW-10S to multi-pin sockets inside LEF master 
(Connectors from chassis remain disconnected).  Use 
clamps on LEF back case to secure the cable.
2.   Install the terminal box in a convenient place with the  field wiring connected inside.  The cord from the box to 
the LEF unit is approximately 2.5m (7’7”) long.
3.  Please note that the  K  terminals are not included in the  LEW Desktop Terminal Box.  The  K  terminals are only 
located in the back of the LEF master.
Operation
Plate Operation
Plate
Directory
Card
 
Before actually installing the LEF system, the contents on pages 4 ~ 12 \
must be thoroughly read and understood.
Operation Plate
Directory Card
PUSH
LEF-3
intercomSINGLE-GANG 
BOX
83.5mm,
3-5/16
2 screws
supplied
Chassis 
Loosen
2
1SINGLE-GANG 
BOX 83.5mm,
3-5/16
2 screws supplied
2
Loosen
2 screws
LEF-5/10/10S
intercom
Unplug
while installing
1
Chassis
UP83.5mm,
3-5/16
SINGLE-GANG BOX
Prongs(4)
2 screws supplied
LE-A,AN
Mounting
bracket
LEW-5, 10, 10S
TERMINAL BOX
WIRE PROTECTOR
Desk-top use;
Wall
WIRE PROTECTOR
Surface wiring;
Bottom view
LEF master
Clamp
Back view
Cut out the cable inlet
Unplug
while installing
Directory
Card 
						

							1 from a sub station can wire to any number 1, 2, or 3 but never C.
C is only used for internal communication between master stations. See be\
low.
Master to Master intercom wiring, internal communication between master \
stations
Important: Never wire C to another master station's C terminal.
Master to sub intercom only, no internal communication between master stations 
Intercom Operation: · To initiate call at sub station, push the station's Call button.  · To answer sub station call at LEF-3, push the appropriate Station Selecto\
r button.    · To talk to sub station, press and hold TALK and release to listen.    
 
PS12  PS-1225UL, PS-1225S, PS-1225, PS-1215DIN Choose either method.
Operation notes:
When operating M1, push #2 Station 
Selector button to listen to "M2", press 
and hold "TALK" to talk.
When operating M2, push #1 Station 
Selector button to listen to "M1", press 
and hold "TALK" to talk.
When operating either master station 
utilizing the "same channel method," 
push #3 Station Selector button to listen 
to the other master station, press and 
hold "TALK" to talk.
LE-SS/A series stations use colored leads
1 is red lead
- is blue lead
E is black lead
Notes:
1 from a sub station can go to
1, 2 or 3 but never C.
Only master stations can answer 
calls and communicate with sub 
stations.
*  LE-SS/A is North America only.
1 
E
-
3  2  1 
E
- 
C 
R  Y  +
-+
LE series sub / door station Single LEF-3
*Keep  E  /  
-  jumpers
only for 2-wire setup
PS12
* *
1 
E
-
3  2  1 
E
- 
C  R  Y  +
3  2  1 
E
- 
C  R  Y  +
-+
LE series sub / 
door station 
*Remove  E  /  
-  jumpers in
all multimaster systems Multi-master 
LEF-3 LEF-3
PS12
*
3  2 
C 
1 
E +
Y 
- 
R 
3 
C  1 
2 
E +
Y 
- 
R 
+-
LEF-3“M1” LEF-3“M2” 
PS12
-+
C  2  1 
3 
E3  2 
1 
C 
E +
Y 
- 
R 
+
Y - 
R 
LEF-3
“Same Channel Method” using channel 3 
PS12 
-+3 
2 
1 
E
- 
R  Y  +C 
3 
2 
1 
E
- 
R  Y  +C 
1 
E
-
1 
E
-
Red 
Black Blue
LEF-3 LEF-3
*Remove all  E  /  
-  jumpers
LEF-3
 “Parallel Method ”
LE series sub / door station
LE-A / LE-DA etc
LE series sub / door station
LE-A / LE-DA etc
LE-SS/ A  series door station*PS12
Red 
Black
Blue
4 WIRING DIAGRAMS - Important Wiring Rules 
						

							RY-PA 
Black  Yellow to CCTV 
input 
LEF-5 channels selective gnd. is
  K  terminal corresponding to the 
number terminals. Contact will be closed 
as long as channel # 
is selected to　　　  +
to # channels selective gnd.
PS12
Door release relay wiring, one relay per door station
Operation:·  To release the door, push the Station Selector button, then press "" to release.
·   When the coil gets 12V DC, the contact changes state, momentarily. Use the relay to trigger a Request-To-Exit   
  input on any standard access control system, or close an open circuit \
(shown above).
External Signaling and CCTV relay wiring, one of either relay (or both)\
 per door station
 PS12  PS-1225UL, PS-1225S, PS-1225, PS-1215DIN
2  1 
K1 LK2K3K4K5
LEF-5
  White lead is 12V DC when 
key button is pressed. 
Colored lead is ground when 
channel is selected.
  Brown lead is #1
  Red lead is #2
  Orange lead is #3
· Relay is activated when  channel is selected and door 
release button is pressed.
RY-PA 
Black 
Yellow 
Black wires are a coil. Provide 
12V DC to trigger contact.  Contact  
Normally Open (N/O) dry contact 
1 
10  V  AC,  1A  , 
24V DC, 1A  Door strike 
AC  
T ransforme  r 
to  L
K#
to 
channels  
LEF-5
1 
E
- +
LK1K2K3K4K5
- +1 
E
- 
Door Strike AC   T ransforme  r 
Yellow 
Black 
LE-D or LE-DA
RY-PA 
LEF-5
PS12
Power source 
for bell strobe,  horn, etc 
RY-AC/A 
Contact will close momentarily 
when sub station that is wired to channel #
(1, 2, 3, 4, or 5) calls in. White to # 
Black to LEF 
-Red to LEF +External device 
to be triggered  Yellow 
· 
·
L terminal 12V DC when door 
release button is pressed.
K# terminal ground when  
channel is selected.
K1  is #1
K2  is #2
K3  is #3
Relay is activated when channel is 
selected and door release button is 
pressed. 
						

							– 7 –
5 WIRING
 Terminal definitions
  Call tone adjustment
3-position volume switch, located under operation plate.
Adjusts call tone volume to low (far left), medium, high (far right)\
. LEF-3
LEW-5LEW-10
LEF-5, LEF-10, LEF-10S
(unused terminals have no screws)
 
Selector switch for Call Tone in Occupied Mode
* IMPORTANT:  The shorting link between the  E  and   –
  terminals 
must be removed on all units  when two or more master stations 
are included in the system.  Leave it attached only in 1-master 
systems with 2 conductor homerun wiring to each sub station. 
* LEW-5, LEW-10, and LEW-10S Terminal boxes are not equipped with  K1 
~ K5 ,  K1  ~  K10  terminals.
1 ~ 10:   Station number, establishes communication to other LEF masters (to  C  \
terminal) or LE subs (to  1  terminal)
C:   “CALL”, Call receive from another master (and All Call/Chime/Musi\
c  reception)
E:  Common communication line
R:  Activates occupied LED to indicate when any master is ON  (line drops to 0V DC when any master is on.)
Y:   Occupied mode control during All Call (becomes +9V DC during All Call)\
L:  Door strike activation (becomes +12V DC when “       ”  button is pressed)
+, –:   12V DC power supply connection. Use Aiphone PS-1225UL, PS-1225S,  PS-1225, or PS-1215DIN.
P1:    All Call control (becomes +10V DC when All Call button is pressed and  activates pretone)
P2, P3:  All Call transmit of audio path from initiating master to BG-10C
   K1  ~  K5  (LEF-5),  K1  ~  K10  (LEF10, 10S): Selective control terminal, used for selective door 
release (w/RY-PA) from the master to multiple door stations. (  K#  terminal becomes ground (–) 
when corresponding station number is pressed.)
LEF surface mount master stations are set in the B position 
from the factory. This allows a sub call-in tone to be heard at a 
muted level while the master is in the occupied mode. 
*If a BG-10C is included in the system, the switch must be set 
to the A position, which will mute the call tone while the door 
chime is heard throughout the system.  Otherwise, the chime 
and call tone will be heard simultaneously.
“A” position:  Mutes call tone at master while system 
    is in occupied mode.
“B” position:  Call tone is heard when master is in 
    occupied mode.
+
E –
1
2
3
C
R
Y
1 2 34 5E+ C YP1 P2 67 8910 E– R LP3 K0
CN2
CN3
CN1
K1
K2
K3
K4
K5K6
K7
K8
K9
K10
CN1
CN3
CN2
to CN1
socket to CN2
socket
to CN3 socket
Yellow
Red Shorting link
Speaker
LEF-10, 10S 
Front case 
back view
Yellow

1
2
3
4
5
E +
C Y R
L
E
–E
– E
–
1
2
3
4
5
E
+
C
Y
P1
P2
P3 6
7
8
9
10
RL

LEW-10S
E– E
–
1
2
3
4
5
E +
C Y 6
7
8
9
10
R
L

FRONT CASE
BACK VIEW
AB
(when shipped)
LEF-3
A B
(*mutes call tone
while Occupied)
LEF-5
A
B
A
B (*mutes call tone
while Occupied)
(when shipped)
LEF-10, LEF-10S
CALL
LEF-5,10,10S
3-pos. call tone vol. switch (under operation plate)
LEF-3 
						

							– 8 –
 Wiring Diagrams
• Three LEF-3 and One Door Station
 LEF All-Master configuration 
LEF all-master systems are designed to be wired in a looped fashion from\
 the first to last master. 
• A single-master system can be wired with 2 conductors homerun from each sub. (Wire #822202 or #821802 in North America)
 Cable requirements
Use multi-conductor cable with an overall shield, non-twisted, 0.65mm to 1.0mm (22AWG to 18AWG), to accommodate the 
maximum number stations in the system, each of which requires one designated wire, plus up to nine common wires per system, 
depending on features used. Selective door release adds one additional wire per door being released. Use the gauge specified 
for the maximum distance between the two farthest stations.
 Power supply
The entire LEF system can be powered by one power supply (PS-1225UL, PS-1225S, PS-1225, or PS-1215DIN), located near 
the center of the wire run.
For a system including the All Call and Chime with the BG-10C, one PS-1225UL, PS-1225S, or PS-1225 will power the BG-10C 
and the LEF system.
 Surge arrestors
Severe weather conditions, such as lightning storms, may cause damage to LEF equipment.
We recommend that power surge protection be installed as follows:  (However, this does not guarantee that no    
damage will occur).
• Connect the GROUND terminal of the power supply to an earth ground.  In this case, a separate surge arrester is not  necessary.
• When using a power supply that has no GROUND terminal, install a surge arrestor near the output as shown.
• Additional SA-1 surge arrestors can be installed to protect communication lines.  One SA-1 per 2 wires on each master station.
Connect 12V DC power supply only. 
Do not connect AC.
: PS-1225UL
  PS-1225S
  PS-1225
  PS-1215DINPS12
3
C
RY+
–+–– 2
ERY+
–
LEF-3 #1 LEF-3 #2
1
E
13
1
C
2
ERY+ –
LEF-3 #3
C
1
2
3
EPS12
Note: This diagram assigns the master
stations as station 1, 2, and 3. The door
station is answered on each station's own
channel button (1, 2, or 3 respectively).
LE-D or LE-DA
PS-1225UL
PS-1225S
PS-1225
PS-1215DIN
    LEF model
12V DC
Surge-
arrestor
(Aiphone model SA-1)
Install a surge-arrestor
(discharging voltage:  100~180V)
at a location closest to the unit, 
taken to earth ground.
Grounded
Remove the shorting link between E  and  -  terminals at all the LEF 
masters and door/sub stations. 
						

							– 9 –
 Three LEF-5 Masters, Two Door Stations with Door Release
: PS-1225UL, PS-1225S, PS-1225, 
  PS-1215DINPS12
: PT-1210N in North America or 
  AC trans.PT
PT
•  Two LEF-3 and 2 Door Stations
Connect 12V DC power supply only. 
Do not connect AC.
Connect 12V DC power supply only. 
Do not connect AC.
Connect 12V DC power supply only. 
Do not connect AC.
  Six LEF-5s
Red
Yellow (2) To Power
for Doorbell
Bell
White BlackRY-AC/A
5
32C
RE
Y+–
L
+–– 4
LEF-5
15
3C1
RE
Y+
–
L 4
LEF-5
253
21
RE
Y+–
L
C
LEF-5
4
E
1
Yellow (2)To Strike
&
Black (2)RY-PA
PS12
Note: This diagram assigns the masters on 
channels 1 ~ 3, and the door stations on 
channels 4 and 5. Each stations own 
channel button is not used in this illustration.
External doorbell will ring when door #5 
calls in. 
LE-D or LE-DA
–
E
1
LE-D or LE-DA
E
: PS-1225UL
  PS-1225S
  PS-1225
  PS-1215DINPS12
2
1
RY+
–– C
E
LEF-3
3
E
1
RY+
–
LEF-3
2
C 1
3
E
+––
1
PS12
Note: This diagram assigns both master
stations to use channel 1 to talk to the 
other master. The door stations are on
channels 2 and 3 respectively.
LE-D or LE-DALE-D or LE-DA
5
32C
RE
Y+–+–
4
LEF-5 #1
15
3C1
RE
Y+
– 4
LEF-5 #2
25
C21
RE
Y+–
4
LEF-5 #3
35
321
RE
Y+–
C
LEF-5 #4
4C
321
RE
Y+
–
4
LEF-5 #5
55
321
RE
Y+–
4
LEF-5 #6
C: PS-1225UL
  PS-1225S
  PS-1225
  PS-1215DINPS12
PS12
Note: This is an all master system. 
When one master calls another 
master, the person at the called
master responds handsfree. There
is no station LED indicating which 
master station has called. Remove the shorting link between
 E  and  -  terminals at all the 
LEF masters and door/sub stations.
Remove the shorting link between
 E  and  -  terminals at all the 
LEF masters and door/sub stations.
Remove the shorting link between
 E  and  -  terminals at all the
LEF masters stations. 
						

							– 10 –
Yellow (2)
+––
E
1
Yellow (2)
To Strike
& To Bell & Power
for station #4
To Bell & Power
for station #5
Black (2)
RY-PA
–
E
1
Yellow (2)
To Strike
&
Black (2)
RY-PA
+–
5
3C1
RE
Y+– 4
LEF-5 #2
25
32C
RE
Y+–
4
LEF-5 #1
1
1
E
–
E
–
1
1
E
–
Yellow (2)
To
Strike
&           
RY-PA
Yellow (2)
Maintained Contact* To
Strike
&            Maintained
Contact*        To
Strike
&            Maintained
Contact*   
RY-PA
Yellow (2)
RY-PA
Yellow (2)
RY-PA
Yellow (2)
RY-PA
Yellow (2)
RY-PA
5
3
2
1
RE
Y+–
LLK4K54
LEF-5
5
3
2
1
RE
Y+–
LLK4K54
LEF-5
LT-1
AH-108
NP-25V
Blue (2)
Red (2)
Red (2)Normally
open
button
Black Red
White
Black Red
White
LT-1AH-108
Blue (2)
SP-20N/A
NP-25V
Yellow (2)RY-AC/A
RY-AC/A
PS12
PS12
NP-25V
*Maintained contact while station is selected. 
 Connect to video switcher, multiplexer, etc.
LE-D or LE-DA
LE-D or LE-DALE-D or LE-DA
LE-D or 
LE-DALE-D or LE-DA
Black (2) Black (2) Black (2) Black (2) Black (2) Black (2)
LLK3K4K5
LLK3K4K5
  Two LEF-5, Three LE-D w/Camera Call-up and Door Release
  2 LEF-5, 2 Doors, 3 Speakers with Release and External Signaling
: PS-1225UL, PS-1225S, PS-1225, 
  PS-1215DINPS12
: PT-1210N in North America or 
  AC trans.PT
PTPT PTPTPT
: PS-1225UL, PS-1225S, PS-1225, PS-1215DINPS12
: PT-1210N in North America or AC trans.PT
PTPT
Capacitors shown are 15-33  μfd, 25V Non-Polarized (NP-25V)Note: 
This system configuration
has the master stations assigned
to channels 1 and 2, and the door
stations as 3 ~ 5. The relays
provide a maintained contact for
camera call-up, and a momentary
contact for selective door release.
 
: Diode Value: 
  1N4001~1N4007 Connect 12V DC power 
supply only. 
Do not connect AC.
Connect 12V DC power supply only. 
Do not connect AC.
Note:  This system configuration has no 
master-to master communication. The horns 
and speaker are shown on channels 1 ~ 3. 
The door stations are shown on channels 4 and 
5. When the door station calls, the respective 
relay will trigger the external bell. Each door 
station will ring a separate bell in this example.
Remove the shorting link between E  and  -  terminals at all the 
LEF masters and door/sub stations.
(North America only)
(North America only)
Remove the shorting link between 
 E  and  -  
terminals at all the LEF masters and door/sub 
stations.