5V Relay Module 4 Channel Active Low Trigger

English Version

Product Overview
The 5V Relay Module (4-Channel, Active Low Trigger) is a compact switching solution for controlling high-power devices (up to 250V AC/10A) with 5V microcontrollers like Arduino and Raspberry Pi. Ideal for automation, IoT, and industrial systems, it features optocoupler isolation and active low logic for safe, reliable operation.

Key Features

• 4 Independent Channels: Control 4 AC/DC devices (e.g., lights, motors).
• Active Low Trigger: Activates with LOW signal (0V).
• Optocoupler Isolation: Protects microcontrollers from voltage spikes.
• SPDT Relays: NO/NC configurations for flexible wiring.
• LED Status Indicators: Visual relay-state feedback.
• RoHS Compliant: Safe for electronics and environment.

Technical Specifications

• Control Voltage: 5V DC.
• Load Capacity: 250V AC / 30V DC, 10A per channel.
• Trigger Current: 15–20mA per channel.
• Isolation Voltage: ≥1,500V.
• Operating Temperature: -20°C to +70°C.

Benefits

• Safe Isolation: Protects low-voltage circuits.
• Multi-Device Control: Manage 4 loads with one module.
• Easy Integration: Works with 5V microcontrollers.
• Durable: Relays rated for 100,000+ cycles.

Usage Instructions

1. Wiring:
   • Connect VCC (5V) and GND to the microcontroller.
   • Link IN1–IN4 to GPIO pins.
   • Attach loads to relay terminals (NO/COM/NC).
2. Code: Set GPIO to LOW to activate relay.

Safety & Storage

• High Voltage: Use insulated tools.
• Inductive Loads: Add snubber circuits.
• Storage: Keep dry and dust-free.

Applications

• Home automation (lights, AC units).
• Industrial machinery control.
• IoT projects (smart agriculture, security).
• DIY repairs and commercial electronics.

Why Choose This Relay Module?
Its 4-channel design, active low trigger, and optocoupler isolation ensure safe, reliable control of high-power devices. Perfect for automation and IoT projects.