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2 
SYSTEM OUTLINE & COMPONENTS
■
 System outline
Individual Components for LEF-3L System:
*LS-NVP/C
  
Vandal and weather resistant sub station, white powder-coated (optional SBX-NVP surface mount 
box available - sold separately)
*LE-SS/A
  
Stainless steel 2-gang sub station
*LE-SSR
  
Stainless steel 2-gang sub station with red mushroom call button
*SBX-2G
  
Surface mount box for LE-SS and LE-SSR
 
*LE-SS-1G
  
Stainless steel 1-gang sub station (optional SBX-SS-1G surface mount box available - sold 
separately)
*SA-1
   
Surge arrestor (1 unit protects 2 wires)
RY-PA
  
Relay, 12V DC input, N/O dry closure output
     
Add one RY-PA per channel requiring a contact closure
  Can be momentary or maintained, according to wiring.
*RY-18L
  
12-18V DC “Form C” relay (N/O and N/C contacts) Refer to RY-18L instructions for detailed wiring diagram.
PS-1225/S/UL
12V DC, 2.5A power supply (only 1 power supply needed per system)
PS-1215DIN
 
12V DC, 1.5A power supply (only 1 power supply needed per system)
LEF-3L TERMINAL DEFINITIONS:
+   
Positive 12V DC
−   
Negative
E   
Common communication
1〜3  
Station number, communication to sub station or other master station
C   
Receiving calls from another master station
R   
Occupied light control (0V DC when system is occupied)
COLOR-CODED WIRES:
White  Common door release activation (+12V DC when Door Release button is pushed)
 
Brown
Ground when station 1 is pushed
Red  Ground when station 2 is pushed
 
Orange
  
Ground when station 3 is pushed
* North America only
LEF-3L
LE-D
LE-D
Door Strike
LE-D
Door Strike
RY-PA
RY-PA
RY-PA
PT
PT
PT
PS-12
■
 Package contents
• LEF-3L
• Packet of screws
•  INSTALLATION & 
   OPERATION MANUAL
LEF-3L
3-call master station 
with selective door 
release
LE-D
Surface mount door station
LE-DL
Surface mount door station
(Aluminum)
LE-DA
  
Flush mount door 
station with stainless 
steel faceplate
LE-A
1-call sub station
LE-A3
3-call sub station
2
2
2
2
2
2
2
2
2
2
PT
: AC Transformer
Door Strike