Temperature function:1. Automatic recognition of working mode 2. Cooling 3. Heating 4. Temperature correction function; Humidity function:1. Automatic recognition of working mode 2. Dehumidifying 3. Humidifying 4. Humidity correction function Remotely reading/setting of parameters ,Real-time reporting of temperature/humidity ,Relay enable function (enabled by default) Set Parameter:1. Working Mode:The system automatically recognizes the working mode according to the starting/stopping temperature and the starting/stopping humidity. 2. How to set the starting/stopping temperature function?Hold press the "TM+"/ "TM-" button for more than 3 seconds to enter the startup/stop temperature setting interface. The parameters can be changed by the "TM+" and "TM-" buttons. After the parameters are changed, wait for 6s and it will automatically save and exit. 3. How to set the starting/stopping humidity function?Hold press the "RH+"/"RH-" button for more than 3 seconds to set the minimum/maximum value of humidity. The parameters can be changed by "RH+" and "RH-" buttons. After the parameters are changed, wait for 6s and it will automatically save and exit. Model Number:XY-TR01 Style:Embedded Max Measuring Temperature:50C - 69C Display Size:1.9 Inches & Under :Temperature Controller Display Type:Digital Type:K Usage:Industrial Screw:1/4 inch Power Type:Charger Temperature range:-20 -60 Celsius Humidity range:00% -100%RH Control accuracy:0.1 Celsius, 0.1%RH Detection probe:integrated sensor Output type:relay output Output capacity:maximum 10A Usage: Step 1:Connect sensor to controller :Connect to power supply to controller Step 3:Adjust Start Temperature,Stop temperature and Temperature Correction Step 4:Adjust Start Humidity,Stop Humidity and midity Correction Step 5:Enable relay output according requirement; Step 6:Remove power supply Step 7:Connect to load with power supply at relay output terminal if need at Step5 Step 8:Connect to power supply for controller again Step 9:Test and working colour:blue Material:Plastic + metal Size:57*60*20mm Package Contents: 1 * Humidity and Temperature Controller with SHT20 Sensor Probe Only the above package content, other products are not included. Note: Light 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.