Herb I found parts for both styles because I will put the singles on my shop vac systems and put the sensor/receiver type on the main dust collector, at least that's what I am planning right now. Less than 15 dollars for the shop vac and less than 17 for the dust collector, that includes the sensor, light with audible alarm and the power supply for each setup. I'll do a little more parts searching when I'm ready to purchase parts and probably be able to cut those cost down a few dollars.
Your BRAIN Is The Most Important Power Tool In Your Shop. Turn It On Before You Turn On Any Other Power Tool.
A Disability Is Only A Disability If You Let It Be One