... DC12V, current: 100mA 20 square meter Monitoring area Network Digital intelligent Detector CHD-LH93 Parameter Size: circular ... , lightning-proof protectionWorking temperature: -20°C~+55°C, storage temperature: -40°C~+85°C,Working humidity: ≤95% ... 9600bpsWith strong software, online management systemAlarm mode: network output, LED and voice indicate alarm statusMonitoring area: 20 square meterAlarm ...