AC90~270V Powered,DC 9V Battery backup
DG321 AC/DC Powered Photoelectric Smoke Alarm with excellent stability and high-sensitivity.
Key Specifications/Special Features
Power Source: 90VAC~ 270VAC, Battery backup (included).
Audio Alarm: 85dB/3m
Temperature Range: 0 to 40
Humidity Range: 5%-95% relative humidity(RH)
Size: diameter 105mm in diameter x59mm depth
Easy to install with mounting base included
Suitable for any room
Low battery signal
Test button for simple testing