Gems Sensors LS-3 series vertical float switch, 316 stainless steel construction. Reed-switch actuated by magnetic float; SPST-NO or SPST-NC contact configuration (specify at RFQ). Applications: bilge alarm, tank-level detection, general water and clean-fluid presence sensing. 316L SS wetted parts for marine and light-chemical service. Complementary to horizontal float switches and multi-station level switches in the Gems LS series.