3-in-1 Carbon Monoxide Detector 0-1000PPM Portable Mini Air Quality Monitor with Lanyard Alarm CO Gas Meter Temperature Humidity Sensor Built-in 800mAh Battery for Basement Trip Camp RV Car

Features:
Mini design with hanging lanyard. This 3 in 1 Carbon monixide detector is mini design with dimensions: 4.13 x 1.37 x 0.63 inches. It is so convenient to carry it or hang it to anywhere.
Electrochemistry working method. Built-in high-sensitive electrochemical sensor, strong anti-interference ability, will not be affected by other odors. It uses a powerful microprocessor with a 0.96 TFT true color display.
Larger detection range: CO range: 0 to 1000PPM; Humidity range: 0% to 99%RH; Temperature range: -10℃ to 50℃. The cycle alarm works when the CO is over 50ppm.
Built-in 800mAh rechargable battery new power-save mode. To extend the CO detector's working time, the backlight will turn off when there is no operation or alarm signal. The audible alarm will sound di every minute when battery is low power. New power-save mode helps to improve the ful charged detector working time to 40 hours.
Portable Designed. Perfect for outdoor and indoor activities, camping tents, boats, aircraft, stove heating, vehicles, and other confined spaces. It is so good helper for you.