220V Dual Voltage Photoelectronic Smoke Detector with battery

dual voltage standalone optical smoke sensor DP-425   Features   MCU technical Apply optical smoke test room Insect-resistant design LED light display Using ABS material Standalone surface mounted, easy operate Built-in IC card, stable performance, high sensitivity Apply optical smoke test room With buzzer, alarm independently 9V battery and 220V
  Technical parameters:  

Unit Size	Φ140X41mm
Working Current
1-Static Current	≤10μA
2-Alarm Current	≤12mA
Operation Voltage	DC 9V Battery &220V
Alarm Sound	≥85dB(3m)
Ambient Temperature	-10°C-+60°C
Ambient Humidity	≤95%RH
Sensor	Optical
Low Battery Alert Remain	7-15 days
Certificate	EN14604 & CE & RoHS Approval