Cofufu 2 PCS 5V 4-Channel Relay interface board + 12 pcs 1P dupont cable 200mm female to female , and each one needs 15-20mA Driver 5V 4-Channel Relay interface board, and each one needs 15-20mA Driver Current Equiped with high-current relay, AC250V 10A ; DC30V 10A Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) Indication LED's for Relay output status include: 2 pcs 5V 4-Channel Relay interface board , 12 pcs 1P dupont cable ( female to female )