4-Channel Relay Optocoupler Module For Arduino Raspberry Pi/UNO R3 MEGA Blue/Black

Highlights

• Can be powered via a mini-B USB connection, 7-12V unregulated external power supply or 5V regulated external power supply
• Small, complete and breadboard-friendly board that is based on the dependable ATmega328P technology
• Pin layout works well with the mini or basic stamp and delivers exceptional performance
• Allows the CPU, RAM and all other computer hardware components to communicate with each other well