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 inch. 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 inch 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 & 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. 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. Specifications: Sensor: Electrochemical sensor Carbon Detection Range: 0-1000ppm, ±10%ppm Carbon Resolution: 1ppm Working Temperature: -10℃~50℃, Humidity ≤95%RH, No condensation Temperature Measurement Range: -10℃~50℃ Temperature Measurement Error: ±1℃ Humidity Measurement Range: 0%-99%RH Humidity Measurement Error: ±5RH Battery Capacity: 800mAh Battery Life: The light screen is about 18 hours, and the breath screen is about 40 hours Charging Time: About 1 hour Charging Method: USB Type-C Screen Size: 0.96 inch TFT color screen Colour: White Material: plastic Package Contents: 1 x Gas Detector 1 x Data Cable 1 x Lanyard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of