It's a good switch, but didn't install as I had anticipated.
I had intended to mount it on the bottom miter track slot, as per instructions. According to the specs for the switch, 'all new Bench Dog router tables come equipped with this slot'. However, the new Bench Dog RT150 ProTop I just purchased did not come equipped with this slot! I did not want to mount it on the fence. It was pretty easy to come up with a good alternate mounting solution. But, if I had known this, I would have purchased a less expensive saftey switch locally.
I guess the 'new' RT150 they sent me wasn't their newest.

Like all Bench Dog products the quality and ergonomics of this switch are top notch. And like all Bench Dog router table accessories the price of this switch is a little steep. (Hence the 4 stars)
Installation was a snap and I love the option of either mounting it high on the router fence or low under the miter slot.
Use of the switch is straight forward and I like the safety button you have to depress in order to turn it on.
Sure beats squatting down to turn on the router!