Natural Gas and Carbon Monoxide Leak Detector with Sound Alarm and Memory



The BH-H3 Natural Gas and Carbon Monoxide Leak Detector is an essential safety device designed to protect you and your family from two major threats: carbon monoxide and explosive gas. This highly reliable detector features a loud 75-decibel pulsing alarm to alert you to potential dangers, ensuring prompt action.

Key Features:

  1. Dual Protection: Detects both carbon monoxide and explosive gas to provide comprehensive safety.
  2. Loud Alarm: Emits a 75-decibel sound to alert you of gas or carbon monoxide presence.
  3. Alarm Status Indicators:
    • For combustible gas: Red alarm indicator flashes, alarm sounds once per second.
    • For carbon monoxide: Red alarm indicator remains lit, alarm sounds twice per second.
  4. Peak Level Memory: Recalls the highest carbon monoxide concentration detected for easy monitoring.
  5. Test/Reset Button: Allows you to test the unit’s electronic circuitry and immediately silence the alarm if necessary.


Voltage:AV 220-V /110-V
Working temperature:0-50℃
Environment Humility:10%-95%
Detecting gas: Combustible gas &CO5Sensor type : Semiconductor sensor
Gas Sampling: Diffuse naturally
Alarm set point : Combustible gas: 10%LEL / CO: 100PPM
Warming time:3min
Accuracy: Combustible gas: ±3%LEL / CO: ±50PPM
Response time: ≤60sresumeautomatically≤30s

Packing list

1* Gas Detector
1* English User Manual

Free Shipping

Under normal circumstances we offer free shipping on all orders, you will see the free shipping option in your cart at checkout. There is no choice of carrier for free shipping, but typically we will ship your order will likely ship using either USPS or FedEx. Full Shipping Policy

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.). Full Returns Policy

When Will My Order Ship?

For Standard Shipping, we aim to pack and ship out your order within 3 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. Sometimes our mail pickup comes in early afternoon, so tracking for orders shipped later that day may not update until the following business day.
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.

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Natural Gas and Carbon Monoxide Leak Detector with Sound Alarm and Memory
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