Specifications 5V 4-Channel Relay interface board, each channel requires 15-20mA driver current. Equipped with high-current relays: AC250V 10A; DC30V 10A. Standard interface that can be controlled directly by microcontrollers (Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, TTL logic active low). Opto-isolated inputs for enhanced safety. Indication LEDs for relay output status. What's in the Package 1 x 4-Channel 5V Relay Module
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