An extremely useful and versatile kit that enables you to use a tiny trigger current - as low as 400µA at 12V to switch up to 30A at 50VDC. It has an isolated input, and is suitable for a variety of triggering options, including an AC or oscillating signal.

It also has a relay-on LED indicator. The kit includes PCB with overlay and all electronic components and full instructions.

Click here for the recommended enclosure.