Grey Waste Tank - 8 Liter - 2.1 Gallons - 1 SensorThis tank has a unique 'triple seal&&';; lid that isolates electronics from the harsh grey waste environment for advanced durability.Features: Integrated sensors for automatic pump control; a solid-state switch protected against water ingress Easy wiring - connect any 12V or 24V DC pump system (up to 20 amps with no relay required) Ports shaped for drilling accuracy (8-liter and 20-liter tanks only) Double switch models - the second sensor can be wired to a high-level alarm or second pump Pumps can be top- or side-mounted on a 20-liter tank Specifications: Capacity: 8 liters (2.1 gallons) No. of Sensors: 1 Electrical Connections: Tinned wire ends Inlet Hose Connections: 19mm ( 3/4") x 2, 25mm (1") x 3, 38mm (1A 1/2") x 3 Outlet Hose Connections: 19mm ( 3/4") x 1, 25mm (1") x 1 Materials: Tank: MDPE, Seals: EPDM/Neoprene, MonpreneA(R), Lid: Glass-filled Polypropylene, ABS, Polyurethane Service Kits (Lid & Sensor Array): AK1005 Quick Guide (pdf)