Side-Mounted Liquid Level Switches for High, Low or Intermediate Level Sensing
Besta A0104G2 Float Level Switch - 247able
IIVVERR Liquid Water High Low Level Sensor Vertical SUS304 Float Switch (Interruptor de flotador vertical SUS304 del sensor de nivel bajo-alto de agua líquida - - Amazon.com
Basics of Switches & its applications - Inst Tools
Choosing the right level switch - Buying Guides DirectIndustry