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Aiphone LEF-3C


Aiphone LEF-3C

Analog 3-Channel Master Station with All Call

The LEF-3C is a selective calling open voice style master station, used to answer calls from other remotes or masters.


  • Supports up to 4 total master, sub, or door stations
  • LED and tone to announce incoming calls
  • Push-to-talk at calling master station
  • Hands-free communication at responding station
  • Privacy feature prevents unauthorized monitoring
  • All Call button (requires additional equipment)



Power Source

12V DC, 300mA per station. Use PS‑1208UL, or PS-1225UL for systems with BG-10C


800mW @ 20Ω (reception)
500mW @ 20Ω (transmission)


Press-to-talk, release-to-listen at master station.
Hands-free at responding station

Talk Channel

1 talkpath. Occupied LED when in use.


5 common wires (E, R, Y, +, -), plus 1 individual wire per station, looped.
All Call: add 3 common wires (P1~P3)
Sub stations: 2 wires homerun in single master systems, or 2 common wires (E, -), plus 1 individual wire per station, looped or homerun.


Up to 4 stations, intermixable

Wiring Distance

650′ w/22AWG; 1600′ w/18AWG

Operation Temp

32°~104°F (0°~40°C)


8-1/4″ H x 6-1/8″ W x 1-3/8″ D