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; ⑥. Model: XY-WT02 ⑦. Working Principle: Electronic Thermostat ⑧. Power: 250V/10A ⑨. Thermostat Temperature Range: 100 ⑩. Version: B: With WIFI communication ⑪. Material: ABS ⑫. colour: As shown ⑬. Package Contents: 1 x Digital Thermostat ⑭. Only the above package content, other products are not included. ⑮. 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.