Built in electronic sensors activates automatically at 3cm water levels, featuring overheating protections and easy operate for quiet ABS construction with 27mm outlet withstands high temperatures while offering easy installation and dry run motor protections Efficiently prevents flooding in boats, manages pool overflows, and maintains water levels in pond during routine maintenance Designed for boat owners, yacht enthusiasts, and pond maintenance professional seeking handsfree drainage solution in marine or outdoor environments Powerful 1100GPH automatic bilge pumps with shaft and housing ensures marine water removal, Manufacturer: JDNH