Wireless CO detector opt standalone mode Wireless carbon monoxide detector ACMD-200 is a wireless carbon monoxide (CO) detector that senses the dangerous concentration of this gas in a monitored room. It can work independently or as part of a two-way wireless ABAX 2 system.• electrochemical carbon monoxide detector• digital temperature compensation• test function• LED for optical signalling• piezoelectric transducer for acoustic signalling• monitoring of the gas sensor• battery status check• operation in ABAX 2 wireless system:- encrypted two-way radio communication in the 868 MHz frequency band (AES standard)- diversification of transmission channels - 4 channels allow automatic selection of the channel that guarantees transmission without interference with other signals in the 868 MHz frequency band- ECO option for extended battery life- built-in temperature sensor (temperature measurement from 0 ?C to +55 ?C)- tamper protection against opening the enclosure