[mman1506]

Originally Posted by Gregor

http://www.wcproducts.net/sensors

I also love these made for FRC sensors, thanks 971! We used them as the upper and lower limits for our elevator. Put velcro on the sensor and a 1/8 rivet on the magnet and you have an easily adjustable, great sensor.

Between these two sensors we've totally eliminated our use of pesky limit switches. I love their price and their ease of use.

A cheaper more durable alternative to the 971 WCP sensor are these inductive proximity sensors.
http://www.ebay.ca/itm/New-LJ12A3-4-...em338fe7 6170

Since they are inductive instead of magnetic they can be triggered by anything ferrous like a steel rivet.

There are also magnetic hall effect versions http://www.ebay.ca/itm/Hall-Effect-H...em487c2a 613c