1, plug and play, easy to install, hole-free installation, removable pins adapted to different (national) specifications for the use of sockets; 2, carbon monoxide concentration, temperature, humidity, gas integrated multi-functional design; 3, multi-scenario applicable: family homes, bedrooms, kitchens, garages, cellars and RVs, etc.; 4, high-precision sensors, high-resolution, fast response, accurate detection; 5, high-definition color screen, degrees clear and accurate, efficient real-time concentration monitoring and display; Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! the product has a key to self-check the test function; the alarm of a key to mute the disturbance-free design; danger is not resolved in the case of the alarm resumed within 6 minutes multi-color light alarm reminder, functionality Instructions clear, beautiful and practical; the use of scientific partition temperature and humidity detection design, more accurate and sensitive temperature monitoring; Gas (CH4/LPG) measurement range 0-10000ppm, response time of 3 minutes ( 3000ppm) Backup current Less than 15uA Alarm current Less than 30uA Operating Voltage AC 90 - 240V C0 gas measurement range of 0-999ppm alarm Standard (UL 2034) 70 5 ppm, alarm within 60-240 minutes 150 5 ppm, alarm within 10-50 minutes: 400 10 ppm, alarm within 4-15 minutes Temperature Measurement Range 32F-212 F ( 1.8 F) Ambient: Temperature -10 C - 55 C Relative Humidity Range 0-99% Relative Humidity ( 3%) Relative humidity Less than 95% RH (non-condensing) Voltage: AC110V Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Color: As Shown Material: ABS Package Contents: 1 set x Carbon Monoxide Detectors 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.