Audio unit for use in the creation of Comelit and/or third-party single-piece entrance panels, Simplebus2 system. To be used in systems with power supply unit art. 1210 / 1210A. Easy to configure, thanks to the smart programming of call buttons. Twilight sensor for automatic nameplate backlighting power-off during daytime hours. Omnidirectional digital microphone for high-fidelity audio. Audio-visual indications for disabled individuals, assistance request can be activated via programming. Equipped with 4 inputs for the connection of traditional buttons or smart buttons art. 3061S. Adjustment and programming procedures take place via the rear of the module. Dimensions (L x H x D): 110 x 65 x 50 mm.