Industrial 8” Stem Float Switch for Tanks | Jenfab Cleaning
The "SludgeBoss" Heavy Duty Float Switch for Use With Sewage, Suspended Solids and Viscous Liquids (20-Foot Cable) SA-2368-6 - The Home Depot
Sludge Boss Septic Float Switch, Heavy-Duty Sewage Pump Switch for Viscous Liquids and Suspended Solids in Wastewater, Mercury-Free Self-Orienting Tank Float for Septic Pumps to 1/2 HP (20 Ft Cable) - Amazon.com
How Does A Float Switch Work? | Atlas Scientific
Basement Watchdog Universal Dual Float Switch with Controller BWC1 - The Home Depot
4.5'' Mercury Float Switch - App4Water
Series CFS2 Cable Float Switch | Dwyer Instruments