General DG168 Battery Powered Photoelectric Smoke Alarm with excellent stability and high-sensitivity . Key Specifications/Special Features

Power Source: 9V Battery (included). Audio Alarm: ≥ 85dB/3m Temperature Range: 0℃ to 40℃ Humidity Range: 5%-95% relative humidity(RH) Sensor: Photoelectric Size: diameter 106mm in diameter x32mm depth Interconnects: No Easy to install with mounting base included Suitable for any room Low battery signal Test button for simple testing