DC Operated Type 2-in-1 Combination Photoelectric & Ionization Smoke Alarm
►Dual Sensor( Photoelectric & Ionization) protects best against both slow smoldering and fast flaming fires simultaneously
►Operated with single 9V DC block battery
►With quick fix mounting bracket for easy installation
►High and stable sensitivity
►Fitting and battery tamper resist feature
►Insects Proof
►LED operation indicator
►Low-battery and battery missing warning indicator
►Test Button
►Extra loud alarm sound over 85dB
►Auto-reset when smoke clears  
►CE approved，comply with UL217 and UL 521 standard