2-Channel Relay Module 12V DC

Switch up to 10A at 250V AC or 30V DC per channel with this 2-channel relay module, driven by a low 12V DC supply and 3.3V/5V logic signals. Optocoupler isolation keeps your microcontroller safe while the SPDT relays handle heavy loads.

Overview

This module integrates two independent SPDT relays, each capable of switching up to 10A. It operates from a 12V DC supply and accepts standard 3.3V or 5V logic-level control signals, making it compatible with Arduino, Raspberry Pi, ESP32, and other platforms. Optocoupler isolation protects the control side from voltage spikes, and the low-level trigger simplifies wiring. Screw terminals for loads and pin headers for control ensure secure connections.

What stands out

• Dual SPDT relays with 10A switching capacity per channel
• Optocoupler isolation for safe interfacing with low-voltage logic
• Low-level trigger compatible with 3.3V and 5V systems
• LED indicators for power and relay status
• Compact design with mounting holes for easy installation

Technical details

• Number of channels: 2
• Operating voltage: 12V DC
• Control signal voltage: 3.3V / 5V DC
• Relay type: SPDT (Single Pole Double Throw)
• Max load: 250V AC / 30V DC, 10A
• Isolation: Optocoupler
• Trigger mode: Low level
• Quiescent current: ~5mA
• Max operating current: ~70mA (both relays active)
• Response time: <10ms
• Electrical life: 100,000 operations
• Mechanical life: 10,000,000 operations
• Mounting: 4x M3 holes
• Compatibility: Arduino, Raspberry Pi, ESP32/ESP8266, PLC

Our verdict

A reliable and versatile relay module for home automation, robotics, and industrial control. The optocoupler isolation and dual-channel design make it a solid choice for projects requiring safe switching of high-power loads.