Characteristics: If the temperature is too high or I ask too (you can still get it from the seller) you have to inform you that it is too high Radio transmission circuit and technology to solve the problem of blocking emissions; Different temperature modes can be changed, different for different scenarios Wireless data transmission, message control handed over Very serious restrictions, energy consumption With monitoring monitoring and monitoring monitoring Send online reports to the host regularly Split design, high temperature Specifications Product name: temperature and humidity sensor Battery Type: 2 * AAA (NOT INCLUDED) Product Parameter: DC3V LR03 Quiescent Current: 30uA Alarm current: 15mA Low voltage and undervoltage: 2.7V zigbee operating frequency: 2.400GHz-2.484GHz; Detection temperature: -10 55 Detection humidity: 10% -90% RH Product size: 70 * 20 * 20MM Product net weight: 100g Attention: If you want to use the pairing function, for example with an air conditioner, you can use the universal infrared remote control to perform pairing. If matched with a humidifier, it can be combined with a zigbee switch for plugging. Please note that this product only supports degrees Celsius, not Fahrenheit First you need to connect to the ZIGBEE gateway before you can remotely control it with your 3G / 4G / WiFi mobile phone This zigbee product does not have low battery reminder function or high or low temperature alarm function. Only the WIFI version has these functions. Package includes 1 * temperature and humidity sensor 1 * sticker 1 * manual This product must be used with zigbee3.0 gateway