Specification:Product Name: Smart MonitorGross Weight:310g/0.68 lbPackage Size:13.9x9.9x4.8cm/5.47x3.90x1.89inchProduct Size: 9.8x9x4cm/3.86x3.54x1.57inchFeatures:3 in 1 multifunctional meter, CO-2 CO detection range: 400-5000PPM, common on the market is the chip analog calculation, data is not true we use high precision sensors, accurate to 50ppm + 5%, temperature detection range: 0-99% RH, humidity detection range: 32-122.Use more scenes - WIFI protocol, able to link other equipment, automatic ventilation and humidification and heatingSmart APP linkage with home smart devices, when linked with humidifier, the humidifier will automatically turn on/off when TH-E RO-OM is dry or wet, linked with smart door val-ve controller, when T-HE RO-OM temperature is lower than a certain preset temperature, the heating v-alve control door will automatically open, when the CO-2 concentration reaches your preset value (double click the power button to set the corresponding CO-2 concentration alarm value according to your environment), it will TRIGG-ER an audible alarm and automatically alarm.Good display - LED colour screen, colour digital display, Celsius and FAHR-ENHEIT degrees Fr-eely selectable Large battery capacity and colour display, type-c interface, built-in 2400mAh lithium battery, note: the battery can last for about 25 hours without being P-LUGGED in, so we recommend plugging into the type-c port for continuous power supply.Accurate calibration measurement function, press and hold the three keys at the same time when the power is switched off, the screen will show a 200 second countdown to calibration and then the data will be displayed after successful calibrationTwo types of installation, one wall-mounted mode with rear hook hole position; the second can be placed directly on the table.Package Include:1x Smart Monitor1x Specification1x USB cable