Design for detecting CO+LPG+Natural Gas,work with electromagnetic valve or exhaust fan,Adopt semiconductor sensor 1.Design for detecting CO+LPG+Gas, 2.Alarm level: Natural gas: 10%±5%LEL; CO: 150PPM. 3.Cordless or Wired Plug Optional, 4.MCU processing adopted. 5.malfunction auto-check indicator. 6.SMT manufacture technology,good stability. 7.LPG Sensor :Adopt semiconductor sensor,CO sensor: Adopt ...