Side-mounted float switches use different actuation methods because of their horizontal attitude. The basic principle, however, is the same: as a direct result of rising or falling liquid, a magnetic field is moved into the proximity of a reed float switch, causing its actuation.
When the effects of shock, wear and vibration are minimized, these hermetically reed sealed switches provide precise repeatability with no more than 1% deviation. The sensor actuation points remain constant over the life of the float switch.