Compact and Exquisite:Compact body design, simple and stylish appearance, lightweight, and easy to carry. 3D porous housing with multiple ventilation holes designed for real-time air circulation convection. The sensor is in full with the air for high sensitivity and accurate detection of small particle content. CO CO2 Concentration & Temperature Humidity MeasurementBuiltin nice-performance infrared carbon dioxide sensor, electrochemical sensor and a high-precise optical sensor to real-time detect the CO concentration, temperature and humidity data at the same time, to ensure obtained accurate data easily in harsh environments. High sensitivity, ultra-low power consumption, fast computing speed, and the detection results are more accurate. Air Classification & Intellint AlarmEquipped with an air classification function 4 different colors correspond to different CO concentration classes allowing you to understand the current air condition more accurately and graphically. When the carbon monoxide concentration reaches 25PPM, the device will tomatically vibrate and promote a sound alarm, reminding you to take timely measures to protect your and your family's health. Multi-function Design:This product combines Type-C interface detection, touching buttons, and other functions to meet your usa needs. There are multiple custom setting options, including screen off time, CO calibration, temperature unit switching, sound and vibrating switch, etc., which make your usa experience more personalized and convenient. Intellint Energy Saving and Humanized Design:The display has an tomatic brightness adjustment function that tomatically adjusts the screen brightness according to the ambient light to conserve power. You can also monitor carbon monoxide levels even when the screen is turned off to conserve battery lifespan. It supports USB Type-C continuous power input and has a built-in 800mAh lithium battery to ensure a long lifespan., Manufacturer: SLZJWLPPA