Description
Product Description
The 1 Channel 12V Relay Module with Optocoupler is a fundamental, yet sophisticated, building block for projects requiring safe, reliable, and isolated control of a single high-power electrical device from a 12V logic system. This compact module serves as a protected interface, allowing a 12V control signal from a PLC, industrial controller, automotive ECU, or timer to safely switch AC or DC loads that operate at much higher voltages and currents. The module’s defining feature is its integrated optocoupler, which creates a complete 2500V electrical isolation barrier between the sensitive 12V control side and the potentially noisy or hazardous load side. This isolation prevents damaging voltage spikes, ground loop currents, and electrical interference generated by motors, solenoids, or AC switching from reaching and damaging your valuable control equipment.
Designed for ultimate flexibility, the module includes a simple jumper to select between high-level or low-level trigger logic, making it compatible with virtually any 12V digital output type. Clear dual-LED indicators provide immediate visual feedback on both the input command status and the relay’s physical switching state. With its high-current relay, secure screw terminals, and straightforward three-pin control interface, this single-channel module is the ideal, reliable solution for adding a single protected switch to 12V-based automation, vehicle systems, industrial controls, or as a modular component in custom panel builds.
Key Features
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Critical Optical Isolation: Integrated optocoupler provides 2500Vrms of isolation, creating a safe electrical barrier that protects your 12V controller from damaging high-voltage transients and electrical noise from the load side.
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Selectable Trigger Logic: A simple jumper allows configuration for either High-Level (active on +12V) or Low-Level (active on 0V/GND) trigger operation, ensuring compatibility with any 12V sourcing (PNP) or sinking (NPN) control logic.
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High-Capacity Relay: Features a durable electromagnetic relay with SPDT (Single Pole Double Throw) contacts, capable of switching loads up to 10A at 250VAC or 30VDC.
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Dual Status Indication: Two independent LEDs provide clear visual feedback: one lights when the opto-isolator receives a valid input signal, and the other lights when the relay coil is energized and the contacts have physically switched.
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Integrated Flyback Diode: Includes a protection diode across the relay coil to suppress voltage spikes generated when the coil is de-energized, safeguarding the driving circuitry and ensuring long-term reliability.
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12V TTL Logic Compatible: Designed for direct and easy interfacing with 12V control systems like PLCs, automotive outputs, or industrial timers, requiring only minimal current (5-10mA) to activate the opto-isolator.
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Secure & Professional Connections: High-current load connections use reliable screw terminals (COM, NO, NC), while control is via a standard 3-pin header (VCC, GND, IN) for a clean and safe setup.
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Compact & Versatile Design: A small, self-contained module that is easy to mount and integrate into a wide variety of 12V-based projects, from simple prototypes to final industrial products.
Main Parameters
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Channels: 1
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Control Logic Level: 12V DC
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Trigger Mode: High or Low Level (Jumper Selectable)
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Isolation Rating: 2500V RMS (Optocoupler)
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Relay Contact Rating: 10A @ 250VAC / 10A @ 30VDC
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Relay Type: Electromagnetic, SPDT (Single Pole Double Throw)
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Input Current: ~5-10mA (to activate optocoupler)
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Dimensions: Approx. 50mm x 40mm x 20mm
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