Power Source
6V DC - Use SKK-620 or 4 "C" Batteries
Communication
Door calls in with 2-tone chime, not adjustable, press TALK button to reply, release to listen, power automatically shuts off circuit
Door Release
Contact rating: 50V AC @ 1A
Wiring
Door to master: 2-cond., overall shield Between masters: 2-cond., overall shield
Distance
Door to farthest master: 245�(22AWG) 490�(18AWG)
Wire Type
Aiphone #822202 or Aiphone #821802