The device is used to automate the start/stop operations of the well pump. When a consumer is switched on, the water level in the tank drops. At the same time, the float opens the supply and the pressure drops. The control device detects the pressure drop and starts the supply (well pump). It features dry-run protection: if there is no water in the well, it automatically stops the pump. The electronic control device bears the CE conformity marking. Supply voltage: 110–230 VAC ±10%, 50/60 Hz. Maximum current: 12 A. Operating pressure range: 1.3–3.5 bar. Maximum allowable pressure: 10 bar. Maximum liquid temperature: 55 °C. Connections: 1″. Protection rating: IP65. Type (acc. to SR EN 60730-1): 1.B. Pressure gauge: 40. 0–12 bar / 0–170 psi. 1/8″ BSPT.