Grundfos 4000.1653 UP10-16BN5 LC HWR Pump-1/2 F NPT (98420222) Silent Operation Integrated external sensor cable, simply mount the sensor on the hot water supply pipe One-touch operation, settings are easily changed using only the fingertip Compact design facilitates installation in confined spaces 115V, Auto, 1/2 Sweat, 6ft. line cord