CEM Portable 4-in-1 Combustible Gas Detector Oxygen Carbon Monoxide Hydrogen Sulfide Confined Space Alarm

Configurable upper and lower alarm limits

LCD backlight display

High-definition color numeric display

Bilingual interface (Chinese and English)

3.7V rechargeable lithium battery

USB direct charging with low battery indication

Four-in-one gas detector

User manual

Certificate of conformity (warranty card)

Factory certificate (English)

Explosion-proof certificate

Charger

Carrying case

Air pump (Model AS8930) for accelerated gas sampling and measurement in confined or pipeline spaces

Explosion-proof certification approved by domestic quality supervision and inspection center for explosion-proof electrical products

Measures oxygen, carbon monoxide, hydrogen sulfide, and combustible gases simultaneously

Air diffusion measurement without pump; pump-assisted measurement for faster response and confined spaces

Triple alarm system ensures safety with audible, visual, and vibration alerts

High precision and reliability with imported sensors

Portable and handheld design suitable for mines, laboratories, workshops, and other industrial environments

Clear and intuitive display with backlight for easy reading in low light conditions

Rechargeable battery with USB charging for convenience

The device complies with explosion-proof standards and is safe for use in hazardous environments

Provides critical gas concentration data to prevent poisoning and explosion hazards

Detailed gas toxicity and explosion limit tables are provided in the user manual for reference

The device supports setting alarm thresholds to meet specific safety requirements