The Relay Shield with 4 relays is an essential tool for managing 220V network consumer devices, switching power equipment motors, and controlling pumps. This shield features four high-power relays, each capable of switching AC 250V-10A and DC 60V-10A. By separating control and traffic channels, the relay shield safeguards your microcontroller. While it provides substantial protection, it is not guaranteed to protect against extremely high currents.

Features

• Relay Placement: The relays and terminals are positioned outside the Arduino board area for easy access and connectivity.
• Optocoupler Isolation: A 4-channel optocoupler (TLP521-4) isolates the relays from the microcontroller, ensuring the Arduino circuit and signal outputs are not directly switching the relays.
• High Load Tolerance: The tracks connecting the relay board and terminals have an additional layer of solder, allowing them to withstand high loads.
• Flexible I/O Usage: Relay control channels can be connected to any D0-D13 Arduino pins using jumpers, providing flexibility in I/O usage.
• LED Indicators: Each relay channel is equipped with LED indicators for easy status monitoring.
• Customization Area: Includes a small soldering area for installing additional components, allowing for the addition of more features and logic for relay control.

Specifications

• Relay Characteristics:
  • AC Switching: 250V-10A
  • DC Switching: 60V-10A
• Placement: Relays and terminals outside the Arduino board area
• Isolation: 4-channel optocoupler (TLP521-4)
• Load Tolerance: Additional solder layer on connecting tracks
• I/O Flexibility: Connect to any D0-D13 Arduino pins using jumpers
• LED Indicators: Each relay channel

Pinout

• GND: Common ground pin
• VCC: Power supply for the relays (6-12V, ~400mA) for out power source.
• Jumper: to select Vin or out power source.
• IN1 to IN4: Control pins for relays 1 to 4, connectable to any Arduino D0-D13 pins
• Relay Terminals: Each relay has three terminals: NO (Normally Open), COM (Common), and NC (Normally Closed)

Package Includes

• 1 x Relay Shield (with 4 relays)