... or DC12V2. Sound pressure range:≥70dB/m3. Consumed power:≤5W4. Resume density:8% LEL5. Induced gas: coal gas, natural gas, LPG6. Alarm mode: flash ... & sound alarm,automatically shut-off gas valve, network alarm signal output7 ... Lock, Electric Strike, Time Attendance and Biometrics, etc. GA-338 Gas Detector