Application champion: the automatic water pump controller switch is suitable for self-priming pumps, jet pumps, garden pumps, water pumps, etc. Composition of the Material: The G1/4" automatic water pump controller switch is made of high quality and durable materials. Stop working: When the system pressure reaches the lower limit, It's automatic controller all about automation and it's about to start. Come on and control the automation: it's the limiter of the pipeline. The system, the automatic automatization and the automatization of the process of automating the process of automating the process . /p> Filter interface: 2 point filtration 1/4 diameter 12.5 mm Measuring range: 1 ~ 50 kPa