Radio Channel Object Block BRO-4 for Comprehensive Alarm System Monitoring

Block BRO-4 is a part of the radio system of notification transmission "Struna-5" and is designed for: control the state of 4 universal alarm loops (loops); control the state of wired object blocks connected via RS-485; control of external light and sound sirens (4 channels); formation and transmission to the centralised monitoring station (CMC) notifications via radio channel from itself and wired blocks connected to it via RS-485, about the mode of operation of the block and the state of the loop; reception and execution of commands from the CMC and the owner. Depending on the installed radio modem unit can operate in the range of 146 ... 174 MHz, or in the range of 403 ... 470 MHz.