Description: Onboard 8P chip mount, to install AT24C02 I2C chip; Piston power supply, onboard power indicator; The pull-up resistor required for onboard I2C communication; All pins are drawn and marked, the address input and write protection pins can be set directly; Material: PCB Size: Approx. 36.5*12*8mm / 1.44x0.47x0.31inch Package Includes: 1 Piece of EEPROM Memory Module