... on the keypad directly,power range:0.5HP~10HP Water Supply System(especially for villa,house)B600S controller for single pump: ... (7) automatic fault detection, such as the water pressure is too high, too low, too low water level alarm, communications failures, and so on ... overload, short circuit, open circuit, overheat and over-voltage and low voltage protection, and so on. (9) energy efficient, than ...