Rule-Mate 1500 GPH 12 Volt Fully Automated Bilge PumpThe Rule-MateA(R) 1500 GPH pump consists of a powerful RuleA(R) bilge pump and a highly intelligent circuit board in a single housing. The pump activated when the water reaches 2-1/2" and automatically shuts off when the pump senses no water against the impeller, reducing the remaining water to approximately 5/8". tttRule-Mate IntelligenceRule-Mate Bilge pumps have built-in programming that can sense when the pump is running but not pumping water. This is a very unique feature to bilge pumps because it protects the pump and the vessel, especially the vessels batteries. If debris fouls the sensor or the pump becomes air-bound, the pump will stop running and begin to "check" for water every 2-1/2 minutes. Once the debris is removed, the pump will revert to its normal operation, turning on when the water reaches 2-1/2" and shutting off at 5/8". 1500 GPH (6819 LPH) at 0&'; (13.6V) All-in-one pump and switch Extra long life heavy duty motor 1" NPS discharge with 1" AND 1 1/8" screw-on ports Three year warranty WARNING: This product can expose you to chemicals including FORMALDEHYDE (GAS) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov. Specifications: Volts: 12v Operation: Automatic Gallons Per Minute: 25 GPM Gallons Per Hour: 1500 GPH Type: Electric Box Dimensions: 5"H x 7"W x 8"L WT: 4.3 lbs UPC: 042237114198 Owner&';s Manual (pdf).embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }