Handheld Diffusion Oxygen Level Detector, High-accuracy O2 Monitor with Multi-mode Alarm

Measuring Range :


The YT-1200H-S-O2 Oxygen Gas Detector is a mini-sized, high-accuracy portable multi-gas detector designed for ease of use and comprehensive functionality. Ideal for measuring oxygen levels, this handheld detector features a back clip and is protected by a durable silicone case, making it suitable for various situations.

Key features include:

  • High Accuracy & Reliability: O2 monitor features a diffusion type sensor with the option to add an external sampling pump to suit a variety of needs. Utilizes world-class sensors for high precision, with detection results approved by third-party testing organizations.
  • Mini Size, Protected by Case: Compact design allows for easy attachment to a belt or helmet. The silicone case is drop-tested to 4m and is water-proof, dust-proof, and explosion-proof.
  • Comprehensive Functions: Oxygen meter has self-calibration and zero calibration functions for accurate and reliable detection. One-touch factory reset, easy to check battery and voltage.
  • Long Operation Time: High-capacity lithium polymer rechargeable battery provides 14 hours of continuous operation for toxic gases and 10 hours for combustible gases.
  • Data Storage: Capable of recording 100 sets of alarm data, with historical records viewable on the device.
  • Alarm Mode: The oxygen monitor has multi-mode alarms such as light, sound and vibration. The alarm points can be customized according to specific requirements.

Ideal for oxygen detection in confined spaces and various industries, including furniture, wallpaper, coating, papermaking, pharmacy, healthcare, disinfection, chemical fertilizer, livestock farming, green household, and agricultural production.


Sampling Diffusion, available for external sampling pump
Data logging Data logging with adjustable interval, and available for data downloading to PC through USB cable.
Gas O2 oxygen
Measure Range 0-25%vol, 0-30%vol
Resolution 0.01%vol, 0.1%vol
Precision ≤±3%F.S. 
Zero shift ≤±1%(F.S./year)
Display LCD dot matrix display, with display of gas type, real time gas concentration, gas unit.
Backlight Time of backlight is settable, when alarm the backlight will be auto on.
Temperature -20℃~50℃
Humidity 0-95%RH (non-condensing)
Explosion-Proof ExiaⅡCT3
Degree of protection IP65
Alarm Sound: 85dB
Light: LED, low alarm: blue, high alarm: red
Alarm point is settable according to customer requirement.
Battery 3.6V 2300mAh lithium polymer rechargeable battery, for toxic gas: 14h continuously, for combustible gas: 10 h continuously, charging time: 4-6 h
Dimensions 131x83x35mm
Weight 240g


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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Handheld Diffusion Oxygen Level Detector, High-accuracy O2 Monitor with Multi-mode Alarm
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