Audio indoor station design standard, series A, aluminum for the AS and A series for surface mounting can be combined with 2 - 5-way frames Product features Calling, speaking, door opening, light, floor call, switching/control functions and internal communication Reverse polarity protected 2-wire installation (JY(St)Y 2 x 2 x 0.8) Talk button with green status LED Light and call shutdown button freely configurable. Button functions can be activated without additional installation, e.g. for internal telephony, activation of switching/control functions in conjunction with Siedle bus switching module BSM/BSE 650-.., targeted selection of door loudspeakers (outdoor stations) A switching function (in conjunction with Siedle bus switching module BSM/BSE 650-..) can be configured on the door opener button using BPS. Integrated privacy lock Parallel connection (simultaneous calling) of max. 4 audio modules or audio indoor stations (from the 3rd device onwards, the Siedle BPS is required for programming) Speech connection possible at any time, even without a door call Connection for Siedle In-Home bus Connection for floor call button Call generator with 11 ringtone melodies, including gong Ringtone volume adjustable in 5 levels up to 83 dB(A) Voice volume adjustable in 5 levels Programming manually, plug+play and via Siedle bus programming software (BPS), according to Siedle system manual Indoor station with hands-free function Status display when speech connection is active Call silencing with status display Call differentiation for floor calls, 2 door calls and internal calls Door opener/light function at any time via bus line 3 LEDs for display (e.g. door open) without additional wiring Display of operational readiness via an LED Optical call display by flashing LED on the talk button