Usage Tips:[Easy To Use] :Push/test button - Connect to power 90V-240V or 9V rechargeable battery(not included), The detector display 3 minutes counting. Visual & Audio Gas Alarm: When the natural gas or combustible gas concentration leaks reach a 53%, this gas detection alarm sound an 70dB alarm and display the dangerous gas concentration level, the alarm sounds and the red light flashes. When Carbon monoxide reaches set concentration, the alarm sounds and the red light flashes. Powerful Quality & Functionality: Natural gas detector adopting high-quality semiconductor calefaction type sensor. More accurate response times to gas exposure, avoiding the possibility of false alarms. LCD display of combustible gas concentration, plug and play, the LED display concentration changes, and an alarm of 70 dB or more issues. Detect Various Gases: Gas detectors for home natural gas and carbon monoxide, Suitable for detecting methane, natural gas, propane, butane, ethane, coal gas, gas oil, gasoline, toluene, sewer gas, alcohol, ketones, and other gases. It is widely used in homes, kitchens, garages, travel trailers, campers, food trucks, restaurants, hotels, and so on. This gas leak detector can decrease the risk of harm resulting from gas leaks, protecting you and your family. Easy to install CO and gas alarm, which can be used by plugging directly into the power socket to detect leaked gas. The system warm-up time is about 3 minutes. During this time period, the number counts down 180 seconds, you need to wait for the display to show 0P (the system enters the working state) before it can be tested normally. The gas detector does not include batteries and needs to be purchased separately for use in the event of a power outage or socket failure . Working Voltage:AC 90-240V Static Current:90mA AlarmCurrent:100mA Rating Power:3 w Warm-up Time:About 180 S Sound Level:85dB/m Operating Temperature:-10-50C installation Mode:Wall mounted Combustible Gas:73%,35001000PPM Carbon Monoxide Gas:30ppm, alarm after two hours50ppm, alarm within 60-90 minutes100ppm, alarm within 10-40 minutes300ppm, alarm within 3 minutes Voltage: AC100-240V Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Colour:White Material:plastic Package Contents: 1 x Gas detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.