1. Smoke intelligent algorithm  
2. High sensitivity, zero false alarm, strong anti-interference 
3. With voice prompts and voice alarms functions 4,GSM/GPRS intranet alarm system, support multi-channel alarm, like SMS, central internet, Wi-Fi, 433mlz, NB-LOT etc,to ensure that the alarm is stable and reliable 
4. Support SMS, central remote control and parameter settings 
5. GPRS is real-time online to get the latest working status of the device at any time 
6. Up to 5 groups preset alarm calls, which can be set together with its SMS switch respectively 
7.Power: DC9V laminated battery (6F22/9V) 
8.Quiescent current: <10uA 
9.Alarm current : <100mA 
10.Transmitting distance: about 100m (open distance) 
11.Operating temperature: 0 Celsius Degrees to + 50 Celsius Degrees 
12.Relative humidity: about 95% RH, no condensation 
13.Alarming sound: >80dB 
14.Wireless transmission: 433MHz/1527/330K 
15.Battery low voltage alarm: The alarm will emit wireless low voltage when the battery is under voltage Code, and the battery emits Wireless low voltage code every 24 hours under continuous low voltage 
16. Product size: 10.6x10.6x4.2cm 
17. Product material: ABS