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
Float Switches For Pumps
STAR Water Systems Plastic Float switch in the Water Pump Accessories department at Lowes.com
Everbilt Vertical Float Switch for Sump Pumps EBPBV - The Home Depot
Pumpmaster Pump Up Float Switch
Guide to Using Float Switches in Water Tanks | Tameson.com
ATER 20 Series Effluent Pump with a 10' Float Switch — Wholesale Septic Supply
Float Switch, Versatile Control and Pump Duty, Normally Closed, 30 Foot Cord - Rainwater Collection and Stormwater Management