| Item |
Description |
| The volume |
≥ 80dD |
| Power supply |
DV9V |
| Battery life |
Carbon- zinc batteries - about 1 year Alkaline batteries - about 3 years |
| Operating temperature |
-10 °C - +50 °C |
| Relative humidity |
≤ 95% RH (40 °C ± 2 °C) |
| Output form |
sound alarming |
| Execution standard |
Gb4715- 2005 |
| Weight |
About 135g (include battery) |
|