Momentary
It remains in a state (NO or NC) only as long as it is being compressed. Once the user removes the compression of the switch the device is no longer in that state.
Latching
It remains in a state (NO or NC) until pressed again. It requires to be pressed down another time to either switch its state.
Anti-rotation system
Once mounted, the device keeps its position.
Totally protected against dust ingress. Protected against low pressure water jets from any direction.