wireless tuya wifi fire smoke alarm detector 90db 9V Battery Operated Photoelectric Sensor Smoke detector
| Power supply | DC9V alkaline battery (6LR61) |
| Static current | < 10uA |
| Alarm current | <100mA |
| Working temperature | 0℃~ +50 ℃ |
| Humidity | ≤95%RH ,no freezing |
| Alarm sound | >80 dB |
| Low battery alert | ≤7.0 V ± 0.2 V |



