The carbon dioxide detector detects the carbon dioxide concentration of the onsite environment through absorption principle of infrared light sources. Adopts NDIR sensor, with high accuracy and fast updates, ensure the most effective real-time display of the current air environment on the screen and on the phone. Multifunctional design, with temperature and humidity detect, automatic calibration and buzzer alarm function. Cellphone Tuya APP control, suitable for agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, and etc. Features: Compact Size: Designed with bracket and holes integrated housing, it supports placing on the table or hung on the wall. You can put it anywhere without taking up too much space. High Precise: With automatic calibration function, high sensitivity, superior interference resistance ability, stable working performance, with low power consumption. Real-time detection, automatic refresh data, with multi-use. NDIR Sensor: With professional NDIR detection technology, real time monitoring carbon dioxide concentration by the high-precise sensor. Support set the alarm threshold and it will alarm you once the carbon dioxide concentration is exceed the setting value. Digital Display: You can see the humidity value, temperature value, and carbon dioxide concentration clearly. Cellphone Tuya APP Control: Search for Tuya APP in the application program, the device will enter the pairing state after the firsttime opening, and you can view the specific data on the APP after completing the connection. (Because it takes time to upload data, it is normal for the APP data to deviate from the real-time data of the detector.) Strong Heat Dissipation: Hundreds of ventilation holes reserved on the housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat dissipation effect. Wide Applications: Suitable for agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, and etc. Specifications: Name: Carbon Dioxide Detector Material: ABS Battery: 1 * built-in 2500mAh battery (included) Carbon dioxide measuring ranges: 400-5000PPM Temperature measurement ranges: -10~99(-4~210) Humidity measurement ranges: 0~95%RH Item size: 106 * 54 * 29mm / 4.17 * 2.13 * 1.14in Item weight: 255g / 8.99ounce Package size: 130 * 80 * 50mm / 5.12 * 3.15 * 1.97in Package weight: 260g / 9.17ounce Packing List: 1 * Detector