This is a 5V 4-Channel Relay interface module, for controlling various appliances, and other equipments with large current. It can be controlled directly by microcontroller (Raspberry Pi, Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430) TTL logic.

• 5V 4-Channel Relay interface board, and each one needs 15-20mA driver current.
• Optical isolation on each channel.
• Standard interface that can be controlled directly by microcontroller (Raspberry Pi, Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430) TTL logic.
• Equipped with high-current relay: AC240V 10A / DC28V 10A.
• Indication LEDs for relay output status.
• Equipped with screw holes for easy installation.