Bidirectional, full-radio indoor siren. Radio-controllable by the anti-intrusion bus system, in addition to the conventional functions, it is also capable of sending supervision, battery low and tamper alarm statuses; powered by 12V DC and/or 3.6V/1Ah lithium battery(in equipment). Colour: white. Dimensions (LxHxD) 100x155x48mm, weight 1.2kg. COMPATIBLE ONLY WITH MODULE RADIO VEDORF, VEDO FULL RADIO, EASY SAFE FULL RADIO.