I need a snap disc that would open at 95F and close at 85F for the rack at work (triggers a shutdown of all equipment in the rack at 95F). Senasys turned out to have the perfect solution. Their switches are made in the USA and the quality shows. I even had a Senasys Customer Service person contact me to verify my order – which was good because I ordered the wrong mounting style! I plan on ordering one for myself for my onboard air so it will shut down the air compressor on my truck if it gets too hot. The sweet thing is it auto-resets when it gets to the low temp set point so you don’t have to manually do anything.