2-Channel 5V Relay Module, Active Low Trigger
The 2-Channel 5V Relay Module (Active Low) allows independent control of two electrical loads using a 5V control signal. It integrates seamlessly with Arduino, Raspberry Pi, ESP32, PIC, AVR, and other microcontrollers.
Each channel responds to an active low input trigger, activating when the control pin goes low. The module includes opto-isolators to protect controllers from electrical interference, along with flyback diodes to suppress coil voltage spikes. With a switching capacity up to 10A, it suits a wide range of household, industrial, and automation applications. Its dual-channel configuration provides flexibility in controlling multiple devices in a compact module.
Key Features
Provides two independent relay channels for controlling multiple electrical devices.
Operates with a 5V supply and supports active low signal triggers.
Integrates opto-isolator circuitry for enhanced protection against electrical surges.
Includes flyback diodes that prevent damage from coil-induced voltage spikes.
Supports both AC and DC loads, ensuring versatile switching applications.
Handles maximum current up to 10A on each relay channel.
Uses screw terminals for safe, secure, and durable wiring connections.
Applications
Controls multiple appliances like lights and fans using Arduino or Raspberry Pi boards.
Automates household electrical systems for smart home and IoT-based applications.
Provides reliable switching for industrial control and factory automation equipment.
Drives DC motors, solenoids, and pumps in embedded control projects and robotics.
Interfaces low-power microcontroller signals with higher voltage electrical loads safely.
Builds power management systems that regulate multiple devices with efficient control.
Used in DIY automation circuits requiring two independent switching relay outputs.
Specifications Table
| Parameter | Value |
|---|---|
| Module Type | 2-Channel Relay Module |
| Operating Voltage | 5V DC |
| Input Trigger | Active Low |
| Relay Coil Voltage | 5V DC |
| Isolation | Opto-isolators included |
| Maximum Load (AC) | 250V AC / 10A |
| Maximum Load (DC) | 30V DC / 10A ‘ |
| Input Control Current | 15–20 mA per channel |
| Terminals | Screw type for load connections |
| Dimensions | ~50 × 40 × 18 mm |
| Weight | ~25–30 g |


























