Choose the BH-4A Standard or Pump Variant
The BH-4A listing offers a handheld O2, H2S, CO and combustible-gas LEL monitor in standard and pump-assisted versions. The variant is a practical purchase choice, so compare the sampling arrangement before comparing the common four-channel display and alarm functions.
Listed Purchase Options
| Option | SKU |
|---|---|
| BH-4A with pump | INS03-8053 |
| BH-4A | INS03-8054 |
Select one listed option. Different ranges or pump configurations are separate supplied versions; they are not all combined in one unit.
Questions That Help You Choose
Which BH-4A variant do I need?
Choose the standard or pump-assisted option for the sampling task; the pump version should not be assumed to be included in every package.
Are the required gases included?
The listed channel combination is O2 + H2S + CO + LEL. A different gas requirement needs a separate instrument/configuration comparison.
What records and accessories are required?
Compare the listed alarm-record review and confirm the actual package for the selected variant.
For the buying comparison, read portable multi-gas selection guide and four-gas vs. five-gas comparison.
Compare another internal-pump four-gas listing.
Compare a Dedicated Diffusion Model
The portable four-gas diffusion monitor lists a standard LEL + O2 + CO + H2S configuration without an internal pump. Compare it with the standard BH-4A option when diffusion fits the sampling plan. If a pump is needed, compare the specific BH-4A pump variant with the internal-pump model linked above.
Product Overview
The BH-4A is a portable 4 gas monitor for checking oxygen, hydrogen sulfide, carbon monoxide, and combustible gas levels. It is offered in standard and pump-assisted variants for field, maintenance, and facility monitoring tasks.
Detection Details
- Measures O2, H2S, CO, and LEL combustible gas in one handheld instrument.
- Available as a standard BH-4A version or a BH-4A version with pump.
- Supports sound, light, vibration, and screen alarm indications.
- Response time is specified as less than 30 seconds.
- Stores alarm records for later review on the device.
Details & Specs
| Model | BH-4A |
| Detected gases | O2, H2S, CO, combustible gas (LEL) |
| Ranges | O2: 0-30% vol; CO: 0-999 ppm; H2S: 0-100 ppm; LEL: 0-100% |
| Alarm modes | Sound, light, vibration, screen display |
| Display | 2.4 inch HD display |
| Battery | Built-in 3.7 V lithium battery |
| Runtime | 6-8 hours |
| Operating temperature | -20 Degree C to 50 Degree C |
Use Notes
- Select the pump variant when active sampling is needed for the intended inspection setup.
- Use the monitor according to the product manual and site safety procedures.
Package Contents
- 1 x 4-in-1 Multi-Gas Monitor
- 1 x English User Manual
- 1 x Charging Adapter
- 1 x USB Charging Cable
- 1 x Calibration Cover
- 1 x Metal Aluminum Box
- 1 x Certificate
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.
