Shop high-quality 5V one-way relay module KY-019 and multi-channel (1/2/4/8 way)
Shop high-quality 5V one-way relay module KY-019 and multi-channel (1/2/4/8 way) optocoupler relay modules in Sri Lanka. Perfect for Arduino, Raspberry Pi, DIY electronics, and automation projects. Reliable performance with optocoupler isolation.
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