BH-4S Four-Gas Monitor — O2, EX, H2S and CO
BH-4S Four-Gas Monitor — O2, EX, H2S and CO - 4 Gas Detector O2 EX H2S CO Free standard shipping to supported destinations. See the shipping policy for preparation and transit estimates.
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Shipping & returns
Shipping & returns
Free standard shipping is available to supported destinations. Delivery time includes order preparation and transit and varies by destination. See our shipping policy for current delivery estimates and availability.
See our return policy for return conditions. For an order-specific delivery question, contact Mcooh.
BH-4S Four-Gas Monitor — O2, EX, H2S and CO - 4 Gas Detector O2 EX H2S CO Free standard shipping to supported destinations. See the shipping policy for preparation and transit estimates.
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Description
Description
This BH-4S monitors the O2, EX, H2S and CO combination identified in its order option. It is the combustible-gas, oxygen, hydrogen-sulfide and carbon-monoxide member of the family, rather than the separate BH-4S O3/SO2/NO2/CO2 configuration.
Choose the Configuration for Your Measurement
- Exact order label: 4 Gas Detector O2 EX H2S CO, SKU INS03-8031.
- Combustible channel: The option label uses EX. Check the exact model's range, unit and calibration basis in its documentation.
- Sampling package: Confirm the supplied sampling arrangement instead of inferring an internal pump from the family name.
Order Options
| Select an option | SKU |
|---|---|
| 4 Gas Detector O2 EX H2S CO | INS03-8031 |
Open an option to review its current price and purchase controls. Each option is a separate order configuration; use the selected product and SKU when confirming the supplied package.
Product Details and Specifications
Discover the Portable 4-in-1 Gas Detector for precise monitoring of O2, EX, H2S, and CO. Features robust alarms, data storage, and IP65 protection, perfect for industrial and environmental safety.





Compare the Relevant Alternative
The portable pump four-gas monitor explicitly describes an internal pump and lists LEL + O2 + CO + H2S. BH-4S names EX in its option and requires a model-specific sampling check. Compare those details rather than treating the channel-count labels as a complete specification.
View the comparison model and its options.
Questions Before Ordering
Does the BH-4S family name identify one sensor set?
No. A separate BH-4S product lists O3, SO2, NO2 and CO2. The four gases in the current order label determine which configuration this page supplies.
How should I choose pump or diffusion?
Decide whether the procedure requires sample drawing, then choose a product with that sampling arrangement explicitly stated. The linked guide explains the comparison; accessory inclusion still needs a package check.
Selection and Use Guides
- Multi-gas detector selection and maintenance
- Pumped vs diffusion gas detectors
- Browse gas detectors by gas and measurement task
Selection note: Follow the supplied instrument instructions and the applicable site procedure. This product comparison does not replace a site-specific risk assessment.



