1、Equipped with a reed sensor system with built‑in electronic control, which can easily realize fully automatic operation. 2、Built‑in float switch! (Separate float switch is not required) The bilge pump has the characteristics of compact design, high efficiency and long service life. 3、It has the protection function of corrosion protection and ignition protection, and the performance is better. 4、With stainless iron shaft, non‑dry operation, for good sealing performance. Snap‑type strainer for easy installation, to offer you much convenience. 5、Do not use any power source until the internal float switch activates the pump (when the water level rises). 1 x Water Pump1 x Manual Item Type: Auto Bilge PumpMaterial: ABSModel: NMBP11-G1100-40-12Maximum Flow: 1100 GPHRated Voltage: 12VRated Current: 3.0AFuse Current: 5.0 AStroke: 13ft / 4mCable Length: Approx. 3ft / 1mOutlet Pipe Diameter: Approx. 1-1/8in (29 mm)How to Use: Automatic bilge pumps can only be used for pumping water. Can not be used for other liquids, and can not be run dryWhen installing, connect the black lead of the pump to the negative pole (-), and connect the brown or brown-white lead to the positive pole (+)Wire connections must be sealed with marine sealant, and all wires and connections must be higher than the bilge water level. Please do not remove the insulator at will if it is not necessary.