Communication : Sub calls in with call-tone and LED, 20 sec. Depress the LED selector button, use TALK/LISTEN switch. Master calls in with tone or voice (no LED lit), reply hands-free. To call, depress a selector, and call by voice or tone Chime available with BG-10C
Communication Output : 500mW
Door release : RY-PA Contact rating: 24V DC, 1A Use 1 RY-PA per door being released
Wiring : Varies by system, see instruction manual or contact technical support