[APP CONTROL]Comes with a WiFi module, just connect to the WiFi network once and download the APP, you can monitor the temperature of the device you want to control in real time and set the value or turn it on or off at any time [HIGH TEMPERATURE CONTROLLER]The temperature control range: -99 Celsius~+999 Celsius, you can freely control it on the APP, choose the temperature unit (Celsius or Fahrenheit) , or choose the heating or cooling mode. Of course, it also supports setting directly through the buttons [MULTIFUNCTIONAL]In addition to the freedom to choose the working mode (heating or cooling), it also has the function of delay start, temperature correction, high and low temperature alarm, emergency stop and sleep. If you operate on the APP, you can also see the past operation records [K-TYPE THERMOCOUPLE]Comes with 1m waterproof temperature sensing probe, high sensitivity, good stability and high measurement accuracy [RELAY SWITCH OUTPUT]The output of the thermostat is one-channel relay switch with a current of 10A, which can meet various high-power loads, working voltage: DC 6-30V, it can be widely used in smart home and industrial equipment, suitable for household appliances, office machines, greenhouses, etc. Colour:blue Material:pcb Package Contents: 2 x temperature controller 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.