Portable CO Detector for Indoor/Outdoor with Temperature Humidity Sensor Mini design with hanging lanyard. This 3 in 1 Carbon monixide detector is mini design with dimensions: about 85 x 50.6 x 17mm. It is so convenient to carry it or hang it to anywhere<br> Electrochemistry working . More accurate detection of carbon monoxide. There is no delay, real-time monitoring, and data is refreshed every 2 seconds shows on the color HD 1.9inch screen, so that you can always know the air quality of the environment.<br> Larger detection range: CO range: 0 to 1000PPM; Humidity range: 0% to 95%RH; The cycle alarm works when the CO is over 50ppm.<br> Built-in 1000 mAh rechargable battery. Come with one type-c USB, this carbon monoxide detector can continue working 50 hours when charging ful.<br> Portable Designed. Perfect for outdoor and indoor activities, camping tents, boats, aircraft, stove heating, vehicles, and other confined spaces. It is so good helper .<br> Color: Orange<br> Material: plastic<br> Package Contents:<br> 1 x carbon monoxide monitor<br> 1 x lanyard<br> 1 x English manual<br> 1 x usb cable<br> Only the above package content, other products are not included.<br> 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.