1. Use high-quality materials with guaranteed quality 2. High current 30A relay 3. APP remote control, high-definition full view display 4. Alarm notification, cloud recording, remote firmware upgrade 5. Wide application range Parameters: Product model: A: ST30 (Without WIFI) Input power supply: DC6-30V Output type: 1 relay switch Probe model: 10K 3950B Probe length: 2 meters waterproof probe Maximum control: current within 30A Additional features: buzzer prompt+backlight control Temperature control range: -40~110°C Temperature control accuracy: 0.1°C Temperature measurement range: -40~110°C Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Material: ABS colour: gray Package Contents: 1 x Intelligent 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.