Everbilt Piggy Back Float Switch for Sump and Sewage Pumps EBFSWPB - 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 (16 Ft Cable) - Amazon.com
10m Sewage Pear Ball Pump Float Switch MC - Pumps UK
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