... brand high quality low price Product Name: Combustible Gas DetectorProduct ID: SQL-EX-11, diffusion (which ... buttons7, highlight the Backlight8, precision: ≤ ± 5%1. Detection of gas: flammable gas2, detection principle: Electrochemical methods3, detection range: 0 ~ ... , response time: ≤ 40s10, sensor life: ≥ 2 years11, use of the environment: Temperature -15degree~ +45 degree; Relative Humidity: ≤ 95 ...