Features: Reserved BOOT. Users can use USB to enter to update firmwareThermistor can select pull-up resistance value through jumpers, in this way to support (2.2K pull-up resistance), convenient for customers use Onboards 1 way 4-wire fan interfaces switches, 4-wire fan support 12V/5V selectionOnboards SPI output interfaces, this port is reserved with two independent IO port, which can be used for material cut off, material blocking detection, or DIY operation of other functions Onboards MAX31865, supporting 2 wire / 4-wire PT1000 option CAN or USB communication is supported. The 120R terminals resistance of CAN CAN be selected through the jumpers, and CAN port is reserved for expansion Equipped with terminals, double-way studs and screws, which greatly meet customers need Specifications: Component:ABS Size:Approx.39.5mm/1.6inch Package Includes: 1 Set Display Screen note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.