Wayne 57729-WYNP WAPC250 Pool Cover Pump, Blue. Pool Cover Maintenance – The WAYNE 1/4 HP Reinforced Thermoplastic Pool Cover Pump is a great addition to your pool maintenance. WAYNE model WAPC250 has iSwitch technology, which activates the pump once the water level is at, or above 2 1/8. Auto Off deactivates the pump when water is at or below 3/4. Automatic Pumping – Water level must be at least 2-1/8 for the pump to turn on, prime, and operate. Water levels less than 2-1/8 won’t activate the iSwitch to start the pump, so manual activation will be needed. Efficient Design – Energy efficient, high flow, oil-free pump. Easy on/off allows you to plug in and leave the pump unattended for worry-free water removal all winter long. Automatic freeze protection within the iSwitch technology helps prevent pump damage. Additional Features – The strainer base filters out debris to minimize clogging and keeps the pump from tipping over. 25-foot power cord and 25-foot “pull-to-shore” rope included to help position the pump on the pool cover. Includes a 3/4 garden hose adapter and check valve to reduce repetitive cycling. Auto On activates when water at, or above 2 1/8 in. Auto Off activates when water at, or below 3/4 in.