Specifications
| Size | 102.4 mm in diameter ×44mm depth (With base) |
| Weight | About 96g (With base) |
| Temperature Range | -10°C to 55°C (14°F to 131°F) |
| Humidity Range | 5% to 93% relative humidity (RH), no condensation |
| Working Voltage | 3VDC (2 × AAA alkaline batteries) |
| Battery | Recommended brand — BP, Energizer, Duracell, Panasonic |
| Battery Service Life | 2 years under normal operating condition (The life may reduce depending on the operating condition) |
| LED Flashing Period | 43 seconds (for normal monitoring);0.5 second (for fire alarm);0.5 second (for test) |
| Sound Period | Three sounds at an interval of 1.5 second (fire alarm);one sound every 43 seconds (low battery warning);three sounds every 43 seconds (failure of the photoelectric chamber) |
| Audio Alarm | ≥ 80dB at 3m |
| Max. Standby Current | 12µA |
| Max. Alarm Current | 30 mA |
| Executive standard | GB20517-2006 |
