I just ordered something similar after reading your post.
I need something to help my resident front splitter destroyer (AKA my wife) LOL!
https://www.ebay.com/itm/332318012698
I like that this appears to be a no drilling, splicing or cutting solution. This one has its own independent visual and audio sensor that I think I can integrate into the dash. If it doesn't work out it was only $17.