1. The external temperature detector can detect the temperature. 2. Set the start and stop temperature. 3. Cycle timing, start and stop time, timer switch. 4. lt is widely used in intelligent control, such as carbon heating, aquaculture, greenhouse, home life and otherplaces. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Temperature display range:-40℃-120℃ Temperature display accuracy:0.1℃ Accuracy:+/- 1% Timing Accuracy:Max 1 minute Working voltage:230V AC Maximum working current:16A Local power consumption:Less than 0.8W Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC230V Colour:White Material:Plastic Package Contents: 3 x Digital Temperature Controller Socket 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.