The CJMCU-2551 is a fault tolerant high-speed CAN device that acts as a CAN protocol controller and a physical bus interface. The MCP2551 provides differential transceiver capability for the CAN protocol controller, which fully complies with the ISO-11898 standard, including 24V voltage requirements. Typically, each node on the CAN system must have a device that converts the digital signal generated by the CAN controller into a signal suitable for bus transmission. It also adds buffers between the CAN controller and the high voltage spikes on the CAN bus, which may be generated by external devices. Support 1MB / S operating rate. Meet the ISO-11898 standard physical layer requirements. Suitable for 12V and 24V systems. Slope External Control, Reduced RFI. Automatically detects a ground fault at the TXD input. Power-on reset and voltage event undervoltage protection. No power-up node or undervoltage does not affect the CAN bus. Low current standby operation. Up to 112 nodes can be connected. Material: Metal size: 18 x 15mm Colour: Purple Quantity: 2 pcs Package Contents: 2 x CAN Communication Protocol Controller Bus Interface Module Only the above package content, other products are not included. Note: Light shooting 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.