
I bought a Solidremote 12V - 24V Secure Wireless RF Controller to disable the starter circuit in my car to prevent theft. I also use it to light up an LED when the starter is disengaged (as an indicator that theft protection is in place) so I used both relays. It has an interesting feature that the relays can be timed to reset so that when I press button A the starter circuit is energized for 15 minutes. It comes back after 15 minutes so I don't have to remember to turn it on. It took a while to understand the programming instructions, maybe even frustrating, but the flexibility is good and it works well.

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