Description
Product Overview
The 2-Way Relay Module is a versatile, high-performance control board designed to interface low-voltage logic circuits with high-power devices. Featuring optocoupler isolation and selectable high/low level trigger modes, this module provides a safe and flexible solution for controlling AC or DC loads from microcontrollers, PLCs, or other digital control systems.
This dual-channel module allows you to control two independent devices simultaneously. Available in 5V, 12V, and 24V versions, it matches a wide range of control system voltages. Each relay is rated for 10A at 250V AC or 10A at 30V DC, making it suitable for controlling lights, fans, motors, pumps, solenoids, and other household or industrial appliances .
The module features optocoupler isolation between the control side and the load side, providing excellent noise immunity and protection for your sensitive control electronics . The trigger mode can be set to either High Level or Low Level via onboard jumpers, allowing compatibility with virtually any logic system .
Key Features
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Dual Independent Channels: Two separate relay channels allow independent control of two different loads from a single module .
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Optocoupler Isolation: Provides electrical isolation between the control circuit and the high-voltage load, protecting your microcontroller from voltage spikes and electrical noise .
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Selectable Trigger Mode: Each channel can be independently configured for High Level Trigger (active HIGH) or Low Level Trigger (active LOW) via onboard jumpers .
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Multiple Voltage Options: Available in 5V, 12V, and 24V versions to match your control system voltage .
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10A High Switching Capacity: Each relay contacts rated for 10A at 250V AC or 10A at 30V DC, suitable for controlling lights, fans, motors, pumps, and industrial equipment .
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SPDT Contact Configuration: Each channel provides Common (COM), Normally Open (NO), and Normally Closed (NC) terminals for maximum wiring flexibility .
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Status Indicator LEDs: Power indicator (green) and dual relay status indicators (red) provide clear visual feedback .
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Fault-Tolerant Design: Even if the control line is disconnected or broken, the relay will not operate unintentionally, ensuring fail-safe behavior .
Technical Specifications
| Parameter | 5V Version | 12V Version | 24V Version |
|---|---|---|---|
| Operating Voltage | 5V DC | 12V DC | 24V DC |
| Quiescent Current | 5mA | 5mA | 5mA |
| Operating Current (per relay) | ~70-80mA | ~30-40mA | ~15-20mA |
| Trigger Current | 2mA – 5mA | 2mA – 5mA | 2mA – 5mA |
| Trigger Voltage (Low Level) | 0V – 1.5V | 0V – 4V | 0V – 8V |
| Trigger Voltage (High Level) | 2.5V – 5V | 4.5V – 12V | 8.5V – 24V |
| Contact Configuration | SPDT (COM, NO, NC) per channel | SPDT (COM, NO, NC) per channel | SPDT (COM, NO, NC) per channel |
| Maximum AC Load (per channel) | 250V AC @ 10A | 250V AC @ 10A | 250V AC @ 10A |
| Maximum DC Load (per channel) | 30V DC @ 10A | 30V DC @ 10A | 30V DC @ 10A |
| Isolation Method | Optocoupler | Optocoupler | Optocoupler |
| Operating Temperature | -25°C to +70°C | -25°C to +70°C | -25°C to +70°C |
| Dimensions | 50mm × 41mm × 18.5mm | 50mm × 41mm × 18.5mm | 50mm × 41mm × 18.5mm |
| Mounting Holes | 3.1mm diameter, spacing 44.5mm × 20.5mm | 3.1mm diameter, spacing 44.5mm × 20.5mm | 3.1mm diameter, spacing 44.5mm × 20.5mm |
| Weight | Approx. 20g | Approx. 20g | Approx. 20g |
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