We have worked with the supplier that makes the TECHAMOR gas detectors so you can be confident this item is tried and tested. If this were not the case, any return cost is on us. Based in Michigan, we are happy to answer any questions and provide lifetime technical support. We also include a 20+ page eBook on Gas and Air Quality Hazards that is emailed (unless seller messages opted out) at time of product delivery.Home SafetyNever again FORGET to leave the stove on with this new, innovative, combustible gas alarm with concentration monitor. Protect your family from suffocation dangers and your home from explosive hazards with this device. Keep your gas bill low by minimizing unattended gas leakage. Keep your electricity bill low with this low wattage alarm. Detection levels ranges from 0% to 20% LEL for multiple combustible gases including methane, propane, butane, coal gas, town gas, LPG Liquid Petroleum Gas, LNG Liquid Natural Gas. Catalytic gas sensor makes accurate gas measurements. TestingOn receipt, test your new detector near a gas stove or propane source. See the displayed gas levels go up before the alarm sounds at 5% of LEL, with 100% LEL being the minimum gas concentration for fires. Push center button for gas readings. Item undergoes self-test sequence on startup.If you are not satisfied, please let us know and we will work to make the situation right. Product Specifications: Power: DC 5V micro USB Area of Usage: Household, Camper, or Portable via micro USB power supply Alarm Set Point: 5% LEL Body Material: ABS/PCB, Metal Static Current: 110mA, Power: Working temperature: 14 to 176°F Environment humidity: 10% to 95% Package Contains: 1 Gas Detector 1 AC Adapter 1 3-meter USB cable 2 Mounting Screws User Manual
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