You guys are awesome. I posted similarly on an electronics forum and got a response that said, "huh"!

Sorry to be so dumb (Im a doctor) but the 12v 10A relay Wireless RF seems like a lot of battery to me. Will a flashlight have enough juice to activate it or is there a need for an auxiliary? Weight's not a really big problem as the dog can pick up heavy stuff - but not a car battery.

Would the pico switch do better in that regard ( posted by Init4fun)? Does the battery in the flashlight provide the power to turn it on and off? Thanks again!