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 Sensor & Accurate Measurement〗Portable H2 gas monitor,Bulit-in high senstive electrochemical sensor measuring range 0~1000ppm with resolution 1ppm, can accurately detect H2 concentration in air.

〖High/Low Alarm Function & Alarm value Adjustable〗When Hydrogen gas concentration reaches preset high or low alarm value,the H2 meter will Sound, light alarm with vibration,factory preset low alarm value is 50ppm, and high alarm value 100ppm.Meanwhile, high/low alarm value is adjustable based on your specific requirements.

〖Digital LCD Display with backlight & Compact and Small Size Design〗High density digital LCD screen display real time H2 gas concentration value, backlight activating function is good for use even in dark areas ;compact size and unique clip design, it is convenient for your to carry around.

〖Rechargeable Li-Battery Powered & Durable Power Supply〗Bulit-in rechargeable 3.7V Li-thion battery Powered,can work continuousely 10-12 hours with full charge(slightly vary with working condition).

〖Strict Inspection and Qualified Explosive Proof Certificated〗This product is compiled with following standard and regulation JJG693; JJG695 JJG915 and GB3836 series anti-explosion standard.