HKD 4 Channel Relay Shield 5V/3.3V Compatible with Arduino Boards

The HKD 4 Channel Relay Shield is a high-quality electronic module designed to easily control high-voltage or high-current devices from your Arduino projects. This shield integrates four 5V relays and plugs directly into Arduino-compatible motherboards, eliminating messy jumper wires.

It provides a reliable interface for controlling home automation devices, lighting systems, motors, and other high-power loads using the low-current outputs of a microcontroller. The shield follows the standard Arduino shield form factor, allowing you to stack it with other shields for more complex applications.

Each relay includes an onboard indicator LED for visual status, and the shield supports both 5V and 3.3V logic levels, making it versatile across multiple Arduino boards. Its durable build and easy installation design make it an excellent choice for smart home projects, DIY automation, and educational use.

Features:

• 100% brand new, high-quality relay shield
• Compatible with Arduino UNO, Mega, and similar boards
• 4 independent relays (5V, model HJR-4102-L-5V)
• Supports both 5V and 3.3V drive signals
• Onboard red indicator LEDs for relay status
• Standard Arduino shield interfaces and stacking support
• 3 × M3 screw holes for secure mounting
• Controls high-power AC/DC devices safely
• Eliminates need for patch cables

Specifications:

• Relay Model: HJR-4102-L-5V
• Channels: 4
• Drive Voltage: 5V / 3.3V logic compatible
• Relay Type: Normally Open (NO), Normally Closed (NC), Common (COM)
• Power Supply: 5V DC (via Arduino or external supply)
• Indicators: 4 × Red LEDs (one per relay)
• Dimensions: Standard Arduino Shield size
• Applications: Smart home, motor control, lighting, automation projects

What's in the box
1 x HKD 4 Channel Relay Shield 5V/3.3V Compatible with Arduino Boards