A 12V 8-Channel Relay Module integrates eight independently controlled electromagnetic relays onto a single printed circuit board (PCB) designed to operate natively on a 12V DC power rail. It allows low-power microcontrollers (like Arduino, ESP32, or NodeMCU) or 12V sensors to coordinate up to eight separate high-voltage AC or DC loads simultaneously. It is the premier component across India for building comprehensive automotive dashboard controls, off-grid solar power distribution panels, 12V battery bank managers, and multi-actuator industrial test benches.
✨ Key Features
- Octa-Optocoupler Galvanic Shield: Packed with eight individual PC817 optocoupler chips that isolate the incoming digital logic from the high-voltage side using light, completely protecting your microcontroller from back-EMF spikes.
- 12V Native Rail Efficiency: Engineered to operate directly off standard 12V car batteries, lead-acid cells, or 12V SMPS units without needing additional step-down buck converters to power the internal coils.
- Flexible Trigger Logic Jumpers: Features independent onboard plastic jumpers for each channel, allowing you to choose whether a channel is tripped by a High Logic Signal (3.3V to 12V) or a Low Logic Signal (0V).
- Comprehensive Diagnostic Array: Equipped with nine surface-mount LEDs; one to confirm steady Board Power (Red) and eight independent channel tracking LEDs (IN1 to IN8) to easily spot which relays are actively engaged.
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