Features: 1. XY-WT02 Digital Thermostat Supports Standard Modbus Protocol And 18B20 Sensor 2. Heating/Cooling High And Low Temperature Alarm 3. With Ntc Waterproof Sensor, Without 18b20 Digital Sensor 4. When The 18B20 Sensor Is Connected, The Temperature Will Automatically Switch To The 18B20 Test Temperature. 5. Temperature Data Can Be Stored In The Background, And The Frequency Of Log Upload Can Be Set. The Fastest Can Be Set To 1 Second/Entry (Default Is 5 Minutes); Data Can Be Queried At Any Time Period, And Data Within A Maximum Of 15 Days Can Be Retained; Later The Cloud Data Export Function Can Be Added To Facilitate Further Analysis Of Temperature Data; 1. Model: XY-WT02 2. Working Principle: Electronic Thermostat 3. Power: 250V/10A 4. Thermostat Temperature Range: 100 Version: B: With WIFI communication Material: ABS colour: As shown Package Contents: 1 x Digital Thermostat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.