This pedal does what it says it will. When you tap it the signal is completely cut for as long as it is tapped. It is totally passive and doesn't need to be powered. One thing to know going in is that it works best when using distorted/dirty tones since they drown out the audible 'click' that travels through the amp every time the switch is engaged. This click is rather noticeable on a clean tone, but to be fair I can't think of a scenario where I'd be using it in that scenario.
It is small, sturdy, and light enough that I wound up improvising a loop of velcro around my guitar's strap and mounted it right where the strap attaches to the bottom of my guitar. This way I can influence it with my hand like a proper poor man's kill switch. 10/10, would velcro again. At the time of my purchase this little machine only set me back $45 and it is hard to beat that kind of value.