Dreyoo Focus On Research And Development, Do Not Cut Corners, Our Diaphragm Water Pump Will Be Wonderful Solution for Your Water Utilization Specification: Voltage: 115V AC Flow Capacity: 4 GPM PSI Cutoff: 45 PSI Amp Draw: Max 0.8A Inlet/Outlet: 1/2" Threaded MNPT Package includes: 1 x Diaphragm Pump 1 X 1/2 inch Twist-on Water Strainer 2 x Hose Fitting 1 x User Manual 1 x Box Container Kindly Remind: 1. Please connect all parts closely to avoid leakage or combine seal tape with our RV Pump Strainer to better prevent leaks on pipes and plumbing 2. To avoid leakage to the pump rotor in case of some product failure, the correct operation is to put the pump head down or flat during when installation 3. The built-in pressure switch is subject to the outlet pressure to automatically turn on or off. When the outlet pressure exceeds 45psi, the pump will automatically turn off itself 4. We have a water pumping test for each product to strictly ensure that the quality is qualified. The partial remaining water drops are normal and do not affect the use