Description
Description
The 16-Channel Relay Module 12V is a professional-grade, high-density control board designed for systems that require reliable switching of up to sixteen independent high-power loads using 12V logic control. Unlike standard 5V relay modules, this board operates natively with 12V control signals — making it an ideal match for industrial PLCs, automotive electronics, 12V battery-powered systems, and many commercial control panels.
Each of the 16 channels features optocoupler isolation, providing complete electrical separation between your 12V controller and the high-voltage load side. This protects your control system from voltage spikes, back EMF, and ground loop noise. The onboard LM2596 DC-DC step-down power supply allows you to power the entire relay bank from a wide input voltage range (typically 8V–35V DC) while delivering a stable 12V to the relay coils and optocoupler circuits — eliminating the need for a separate 12V power supply, even when all 16 relays are activated simultaneously.
Visible LED indicators per channel provide clear status feedback, and the robust screw terminals ensure secure high-voltage wiring. Whether you are upgrading an industrial machine, building a 12V automation system, or deploying a large-scale lighting controller, this 16-channel 12V relay module delivers reliability, safety, and scalability.
Features
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16 independent relays with optocoupler isolation per channel
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Native 12V logic control — compatible with PLCs and 12V systems
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Onboard LM2596 switching power supply (8V–35V DC input → stable 12V output)
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Eliminates external 12V power supply — runs from a single higher-voltage source
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Active HIGH trigger (12V TTL logic compatible)
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LED indicators for each relay channel
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Screw terminals for all high-voltage connections
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Standard 2.54mm pin header for control signals
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Optocoupler protection for controller I/O pins
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Suitable for AC (250V/10A) and DC (30V/10A) loads
Technical Parameters
| Parameter | Value |
|---|---|
| Control Logic Voltage | 12V DC (TTL) |
| Input Power Supply (LM2596) | 8V – 35V DC (recommend 15V–24V) |
| Number of Channels | 16 |
| Optocoupler Isolation | Yes (per channel) |
| Maximum Load Current (per relay) | 10A (resistive load) |
| Maximum Switching Voltage | 250V AC / 30V DC |
| LED Indicators | Yes (16 LEDs) |
| Module Dimensions | Approx. 200mm × 110mm × 25mm |
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