1、Support CAN V0B specification, the communication speed 1Mb / S 2、With standard frames, you expand the frame and the far frame. 3、DC5V power supply module and SPI interface protocol control 4、120 ohm termination resistors, Impedance matching, ensure drive capacity, long-distance data transmission against signal radiation. 5、Compatible with Arduino based micro-controller projects. MCP2515 CAN Bus Module*3 Weight: 20 grams Size: 4.4* 2.8cm Material: plastic Module dimensions: 4. 4 x 2.8 cm/ 1.57* 1.1" (approx.) Working Current: 5mA & 1μA standby current Working Temperature: (Industrial grade) -40°C - +85°C Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.