It is made of electronic accessories, surface anti-oxidatioan, inner conductor: pure copper,it is long lasting. The MCP2515 module is 5V DC power supply, SPI interface protocol control,working current is 5mA. SPI interface protocol control, 120 ohm terminating resistor, impedance matching, guaranteed drive capability, long-distance data transmission to prevent signal emissions. It is suitable for home smart devices, industrial wireless control, wireless monitoring, wireless. Working voltage DC 5V Working current 5mA Size 40x27.5mm Type Bus Module Brand Unbranded/Generic MPN MEM94927254273 EAN 4894927254273 .