I've got remote switches for both of my block heaters. The original GE switches quit working so I just bought 2 more from Home Hardware up here. They are made by woods.A timer is a good thing to use with a block heater. I told my kid to unplug the block heater one day and he wandered off towards the shed. I looked 10 days later and the block heater was still plugged in running up my power bill 24/7.
darn fool kid just could not understand why I was upset.