Total BH-4A/Pump Multi Gas Detector (O2, CO, H2S, LEL)

Measurement range: Ex + O2 + CO + H2S

Alarm type: Vibration + Sound + Light

Measurement method: Diffusion

Temperature range, humidity:

Operating temperature: -20°C~60°C

Operating humidity: 5%~95%RH, non-condensing

Battery type: Rechargeable lithium battery, 3.7V, 1800mA.