| Size | Diameter :125mm |
| Sensitivity of Smoke | ⅡGrade |
| Emission Distance | Open ≥ 120m |
| Emission Frequency | 433MHz |
| Decibel | > 85 dB |
| Power Supply | 9V Battery |
| Working Temperure | -10℃~50℃ |
| Interface Temperatrue of Air | 10%-90%RH |
| Alarm Current | ≤ 40MA |
| Standby Current | ≤ 10uA |