The CJMCU-2551 is a fault tolerant high-speed CAN device acts as a CAN protocol controller and a 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 on the CAN system must have a device 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. the ISO-11898 standard layer requirements. Suitable for 12V and 24V . 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 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 : 1 pcs Package Contents: 1 x CAN Communication Protocol Controller Bus Interface Module Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.