... We sell from manufacturer directly. PG610-O2 oxygen gas detector shell is nonskid, waterproof, dustproof and explosion-proof.Main ... power real-time display, under-voltage hint, low pressure automatic shutdownl Standard MINI-USB charging interface; charger is ... × 60 mm × 24 mmStandard configuration: instrument box, gas detector, specifications, certificate of approval, warranty card, charger, gas hood ...