We have worked with the supplier that makes the TECHAMOR gas detectors so you can be confident this item is tried and tested. Otherwise, any return cost is on us. As the only US based retailer of this item, we are happy to answer any questions and provide lifetime technical support. We also include a 20+ page eBook on Gas & Air Quality Hazards that is emailed at the time of item 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 in % LEL go up before the alarm sounds at 5% LEL, with 100% LEL being the minimum gas concentration for fires/explosions. Push center button for gas readings. Item undergoes self-test sequence on startup.If you are not satisfied or the fragile chemical sensor is damaged in transit, please contact us through Amazon and we will 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: 0 to 55°CEnvironment humidity: 0% to 95%Package Contains:1 Gas Detector 1 AC Adapter1 3-meter USB cable2 Mounting ScrewsUser Manual
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