Wireless addressable manual call point designed for operation with Comelit wireless expansion modules. Resettable operative element with special plastic key (supplied). Device enrolling is easy and instant. Communication distance between button and expander (in open space) over 1000 m. Two-way radio communication with proprietary communication protocol. Main battery (1 x CR123A) with maximum life up to 10 years (depending on usage and settings). Instant transmission the event of an alarm, fault and removal of the base, thanks to the tamper device inside. Operating temperature -10°C / +55°C. Dimensions (LxHxD) 90x90x57 mm. Material: ABS. IP40 protection rating. Approved to EN 54-11 and EN 54-25.