CD3 Three-in-one Gas Detector for Oxygen, Carbon Monoxide, and Nitrogen Dioxide



The CD3 Three-in-One Gas Detector is specifically designed for coal mines, capable of detecting oxygen, carbon monoxide, and nitrogen dioxide levels. This multi-parameter measuring instrument boasts a lightweight body with a high-strength ABS shell, making it easy to grasp and comfortable to hold with one hand.


  • Lightweight Body: Easy to handle, designed for one-handed operation.
  • Three-Proof Design: Safe, reliable, and resistant to water, dust, and impacts, ensuring durability in harsh environments.
  • Bilingual Operation: Simple operation with three buttons, featuring a 2.0" LCD display with a 320*240 high-definition interface. Supports Chinese and English settings for multi-country use.
  • Data Management: Capable of storing up to 500 sets of data, which can be easily imported to a computer for detailed analysis.
  • Quadruple Alarm System: Equipped with an ultra-high decibel buzzer, vibration alert, flashing lights, and interface color change to ensure safety. Real-time curve analysis and customizable high and low alarm values provide clear and simple monitoring.

Ideal for use in confined spaces, the CD3 gas detector ensures safety and reliability in detecting hazardous gases in coal mines.


Product name: Multi-parameter tester
Detection method: diffusion
Power supply mode: rechargeable 3.7v lithium battery
Battery working time: continuous working more than 8 hours
Explosion-proof mark; Exdib I Mb
Unit switch; ppm and mg/m3 switch each other
Methane measurement range; (0.00-4.00)% CH4
Oxygen measurement range: (0.0-25.0)% 02
Alarm mode; sound, light vibration, screen display change
Working temperature:-10°C~40°C
Charging time: less than 7 hours
Protection level: IP65
Guidance method: large LCD screen displays real-time data
Explosion-proof certificate number: 320171034
Record storage; 500 groups of alarm records
Carbon oxide measuring range (0-1000) 10-6 CO
Hydrogen sulfide measuring range: (0-100)10-6 H,S

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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CD3 Three-in-one Gas Detector for Oxygen, Carbon Monoxide, and Nitrogen Dioxide
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