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.
Free Shipping
Free shipping is available on all orders. Shipping methods and carriers may vary depending on the destination, order details, and available logistics options. Full Shipping Policy
Returns Policy
For returns and refunds, please review our full Refund Policy before placing an order. If you need help with an order, contact us before your order has shipped whenever possible. Full Returns Policy
When Will My Order Ship?
For Standard Shipping, we aim to pack and ship out your order within 4 business days. During special periods, such as heavy order processing or local inventory shortages that require deployment, please expect it to take an additional day or two for processing. We ship five days a week, Monday through Friday.
You will receive a shipment confirmation with tracking information via email when your order has shipped. Once you receive this email, we cannot change or cancel your order.
Can I Change The Shipping Address On My Order?
Please contact us immediately via email if you realize that you gave us the wrong shipping address — if it hasn't shipped yet, we might be able to correct it before it goes out the door.If your order ships to the address provided and is returned to us as undeliverable, then you are responsible for paying the cost of shipping again to resend it to you. If you decide you do not want your order reshipped, we'll refund you for the products less the original shipping charges, once your order returns to our warehouse. We'll reach out to you to coordinate your options before re-shipping.
If your order ships to an incorrect address provided at the time the order is placed and is not retrievable, we are not responsible and cannot offer reimbursement.
Unable to find satisfactory answers ? more FAQs
Let customers speak for us
My first impression after opening and installing batteries was that this meter is very well built considering the price and manufacturer. I had read some reviews stating that it's amp measurements were not accurate below 5 amps, I haven't seen any issues in any measurements I've taken, even side by side with my fluke meters. I've successfully taken accurate amp, voltage and continuity measurements with this ETCR6920B, the display is nice and legible. I haven't tried storing data and making transfers to a PC yet, the soft case is good enough for storage on a shelf and the test leads are of good quality and rated for 1000v. There's nothing bad to say about this meter especially when you consider the price, it's a really great meter.
Works as described.
