Pump dry-running protection. Detects prolonged "dry running" of the connected pump and switches it off automatically. Prevents the pump from overheating when operating without water. Easy to retrofit into the existing water supply. Technical data: Voltage 12 V,
Fuse protection 2.5 A fast, overload detection (electronic) 7.5 - 8.5 A, pump power min. 12 W, max. 45 W.