Household Gas Detector

We are offering household gas detector. Product description：
gas detected: natural gas lpg coal gas
sensor:japanese electro chemistry sensor
agent query function
alarm record query function
smart voice alarm and digital display
alarm point settings
concentration unit conversion
measure range: 0-50kppm （0-100%le ）
display range: 0.8-30.0kppm （1.6-60%lel）
concentration alarm: 5.0kppm (10%lel )
alarm point set : 19.9kppm （ 2-19.8%lel）
working environment: 0-60℃ ≤95%rh
input power : ac110v~ac240v
gas sensor: service life for 5 yea