Bilge pump switch, submersible pump switch, float switch, mercury free float switchWire Gauge Size：18 AWGWire Lead：1 mMax Amps：20A / 10ASEAFLO 12-24-32-VDC Boat Bilge Pump Float Switches are the Switch of choice for selective boaters all over the world. Featuring quality design and construction to offer reliable engagement of your bilge pump. For pumps drawing up to 20 amps. SEAFLO float switches are designed for use with fresh water and salt water only.