HKD 4-Channel Solid State Relay Board - 5V (Omron Relays 240V/2A with Fuse)

The HKD SOLID STATE RELAY BRD 4CH 5V is a high-quality 4-channel relay module that uses genuine Omron solid state relays to provide silent, fast, and reliable switching of AC loads up to 240V at 2A. Designed for applications where electrical noise, mechanical wear, and arc suppression are critical, this board is ideal for automation systems, home control, and industrial electronics.

Unlike traditional mechanical relays, this board's solid-state design ensures long-term durability with no moving parts. Each channel features a built-in resistive fuse for added safety and protection against overcurrent conditions.

Key Specifications

• Relay Type: Solid State (Omron brand)
• Number of Channels: 4 independent relay outputs
• Input Voltage: 5V DC
• Control Signal Logic:
  0-2.5V: Low (Relay ON)
  3-5V: High (Relay OFF)
• Trigger Voltage: 3.3V to 5V (compatible with 3.3V and 5V logic devices)
• Trigger Current: 2 mA per channel
• Operating Current: 12.5 mA (total when active)
• Quiescent Current: 0 mA (no relay triggered)
• Load Capacity: 240V AC / 2A (resistive load per channel)
• Output Protection: Built-in 240V / 2A fuse per channel
• Dimensions: 57 mm x 55 mm x 25 mm (L x W x H)

Pin Definitions

• DC+: Positive power supply input (5V DC)
• DC-: Ground connection
• CH1-CH4: Signal input pins for each relay (active LOW trigger)

Features and Benefits

• Silent Operation: No clicking or buzzing, perfect for noise-sensitive environments
• Omron SSRs: High-quality components ensure longevity and performance
• Low Trigger Current: Compatible with microcontrollers like Arduino, Raspberry Pi, STM32, and ESP32
• Fuse Protection: Each channel includes a fuse to prevent overload damage
• Compact Design: Small footprint suitable for enclosed control panels and embedded systems
• LED Indicators: Visual feedback for each relay's active state (if applicable on model)

Applications

• Home automation (lights, fans, AC appliances)
• Industrial control systems
• Remote AC load switching
• IoT projects and smart devices
• Robotics and automation requiring AC power control

Why Choose the HKD 4-Channel SSR Board?

This relay board offers quiet, contactless switching with enhanced reliability and safety, backed by the proven performance of Omron SSRs. Whether you're automating your home or designing robust industrial systems, the HKD SOLID STATE RELAY BRD 4CH 5V is an efficient and professional-grade solution.

What's in the box
x1 HKD 4-Channel Solid State Relay Board - 5V (Omron Relays 240V/2A with Fuse)