Characteristic of temperature control: As the temperature rises, the resistance decreases exponentially. UART are using same port with the bluetooth module, can use UART communication with upper computer. Power board: With the function of activation by button; There are five lights on the board, 4 yellow lights, one red light, each yellow light represents 25% electricity. The red light represents the status light of the power board, which is always on Touch LCD display screen: Can customize related or LOGO, support 485 and UART communication, only some parameters can be modified. 485 baud rate communication with upper computer: 9600/ or 115200/ CAN baud rate communication with upper computer: 250/ or 500/ Material: plastic colour: as shown Package Contents: 6 x Accessory 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.