Basic system (no lock open button) installs with the same wires you use for a bell. Features include:
Seperate chime and communication volume controls
Back-lit call button
Uses the same 12-16 volt AC transformer now being used by door bell
||12 ~ 16V AC transformer, 10VA (w/no-load voltage rating: 20V or less).
Use PT-1210N plug -in tranformer (12V AC) or PT-1610 hardwired 16V AC transformer (16V AC)..
||2-tone chime. Press TALK to reply. Hands free at door. Times out in 15 seconds after TALK is pressed.
||2 wires, parallel, shielded, non-polarized.)
||245' with 22AWG, 590' with 18AWG.