APB-200 Wireless Panic Button The APB-200 is a wireless panic button used to trigger a panic alarm or call for help. It can also be used to control various devices (e.g. automation or access control systems). It is designed to operate as part of the ABAX 2 two-way wireless system. Encrypted two-way radio communication in the 868 MHz frequency band (AES standard); transmission channel diversity (4 channels) enables automatic selection of the one that allows for transmission without interference with other signals in the 868 MHz frequency band; remote button firmware updates; remote configuration; ECO option for extended battery life; battery status monitoring; LED for easy button testing; tamper protection against opening the enclosure and removal from the mounting surface; APB-200 is supported by the ACU-220/ACU-280 controller; ARU-200 retransmitter; Technical Specifications . Expected battery life (in years) up to 2; Operating temperature range -10°C..+55°C; Maximum current consumption 18 mA; Weight 73 g; Maximum humidity 93.3%; Operating frequency band 868.0 868.6 MHz; Battery CR14250 3V; Standby current consumption 55 A; Dimensions ø97 x 29 mm; Radio communication range (in open area) for ACU-220 up to 2000 m; Radio communication range (in open area) for ACU-280 up to 1200 m; .