La description

Main Features:

1. Size : Ф**5**1.3mm
2. Advanced filtering design to prevent dust, smoke, and oil mist from entering
3. Easy rotating installation for ceiling mounting
4. Ultra-loud alarm volume for early fire alerts
5. Multiple ways to trigger alarm, including smoke, temperature, and motion detection
6. Customizable communication compatibility with NB-IoT, Cat.1, and more
7. Diverse alarm output options: phone call, SMS, WeChat, and visual signals
8. Convenient remote silencing function
9. Self-checking function to indicate operational status
10. Optional communication modes including NB-IoT.Cat1(4G). Lora. Wifi. Zigbee. Bluetooth. **5 Series. RF (**8/**3). Inter-connection.
11. Signal failure indication and local/remote signal strength display at operations center.