Works with eWeLink Smart Valve Controller
1. MCU Embedded, intellective detection
2. Audio Alert + LED Indicator
3. Input: AC110~240V, 50/60Hz
4. Output: DC 5V, 1A
5. Detect Gas: Natural Gas, Coalgas, CH4, Biogas...
6. Alert Volume: 80db
7. Frequency: 433Mhz