2-Channel 24V Relay Module Active Low
The 2-Channel 24V Relay Module (Active Low) provides two independent relay channels for controlling multiple loads using a 24V DC low-level trigger signal. Each relay activates when its input pin receives a low logic level, making the module ideal for controllers configured for active low operation. It supports AC loads up to 250V/10A and DC loads up to 30V/10A, giving flexibility in controlling appliances, motors, pumps, and industrial devices
Built-in opto-isolators provide safety and prevent interference between the control side and the load, while flyback diodes safeguard microcontrollers and PLCs from relay coil voltage spikes. This relay module integrates seamlessly with Arduino, ESP32, Raspberry Pi, PLCs, and other control systems, making it suitable for IoT projects, home automation, industrial automation, and robotics applications that require reliable dual load switching.
Key Features
Provides two relay channels with 24V DC active low inputs.
Supports AC loads up to 250V and 10A per channel.
Handles DC loads up to 30V and 10A per channel.
Opto-isolators ensure safe separation between control and load circuits.
Flyback diodes protect controllers from harmful relay coil surges.
Compatible with Arduino, Raspberry Pi, ESP32, PLCs, and more.
Screw terminals allow secure wiring of multiple independent loads.
Applications
Controls multiple appliances such as fans, lights, and electrical devices.
Interfaces low-voltage controllers with higher voltage power systems.
Drives motors, solenoids, or pumps in small automation projects.
Enables IoT projects requiring dual switching capabilities.
Supports smart home automation with reliable multi-load control.
Provides dual-channel control in robotics and industrial automation.
Works in workshop projects or prototypes needing controlled switching.
Specifications Table
| Parameter | Value |
|---|---|
| Module Type | 2-Channel Relay Module |
| Operating Voltage | 24V DC |
| Input Trigger | Active Low |
| Relay Coil Voltage | 24V DC ‘ |
| Isolation | Opto-isolators included |
| Maximum Load (AC) | 250V AC / 10A per channel |
| Maximum Load (DC) | 30V DC / 10A per channel |
| Input Control Current | ~15–20 mA per channel |
| Terminals | Screw type for load connections |
| Dimensions | ~65 × 38 × 18 mm |
| Weight | ~30–35 g |


























