###. Calibration Due…26/9/Key Features: Simple 1-button operation Measures up to 4 gases: CH4 – Methane (LEL) O2 – Oxygen CO – Carbon Monoxide H2S – Hydrogen Sulphide Other flammable gases, available on request Audible, visual and vibrating alarms Internal pump (optional) Lightweight yet robust construction Sensor integrity checking Ease of maintenance
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