Product review (5 stars): Works as described.
While this is rated at 250 volts, it will work with 110 V just fine. Comes with one 10 amp slow blow fuse. You can find replacements at Radio Shack for about $3.50 for a bag of 5 or so. Allows you to use the switch or bypass the switch, depending on how you connect it. The flange around the body of the unit is not very wide, so you need to measure and cut carefully when you're cutting into a project box, or you will see the hole past the flange. Otherwise, works just fine.