... EN50291 3.Test Button 4.Low Battery,fault signal alarm CO alarm PW-916 is designed to detect the leak of ... Supply: 4.5V Alkaline Battery;4.Standby Current: 10uA;5.Alarm Current: 23mA;6.Operation Temperature: 0°- 50°;7.Low ... cover smoke detectors (smoke alarm), heat detectors (heat alarm), carbon monoxide detectors (CO alarm), gas detectors (gas alarm), water detectors (water alarm), please feel free ...