Often used for sensing the position of glider undercarriage handles, airbrake handles, water ballast dump lever, canopy locked and can be used in conjunction with a glide computer or variometer to provide warnings.
The LX range of instruments can offer undercarriage not down warnings, airbrakes unlocked warnings, canopy not locked, water ballast taps open etc...
We also have a magnetic reed switch which can be used as an alternative if a lever limit switch will not work in your setup.