For all orders exceeding a value of 100USD shipping is offered for free.

Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.

Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.

〖High Sensitive and Accurate Measurement〗Single O3 gas monitor,Bulit-in high senstive sensor, measurment range 0~10ppm with resolution 0.01ppm. And the unit can store up to 100000 pieces of test data, and you can view historical data at any time with the software.

〖High and Low alarm function with three alarm methods〗when gas concentration reach preset high or low alarm value, the meter will Sound, light alarm with vibration,meanwhile, high/low alarm value is adjustable based on your specific requirements. And shortcut keys to quickly turn on and off the sound alarm and storage mode.

〖2.4 inch high-definition colorful screen〗High density digital colorful LCD screen display gas concentation value, backlight function is suitable use for dark areas; compact size and unique clip design, it is convenient for user to carry around.

〖Durable power supply〗Bulit-in rechargable 3.7V Li-thion battery, can work continuously 8hours with full charge(slightly vary with working condition).

〖Strict and qualified certificate〗This product compiled with following standard and regulation JJG693; JJG695 JJG915 and GB3836 series anti-explosion standard.