1. lowest pressure: 20psi 2. highest pressure: 80psi 3. male & female: zi/4" 4. pressure setting: 20-40psi, 30-50psi, 40-60psi 5. single phase: 115v ac-------------1.5hp 230v ac--------------2.0hp 12a 230v ac--------------3.0hp 17a the other specifications as follows: pc-3: 1. pressure range: 0.7-3bar 2. max. current: 5a 3. male & female: z1/4", z3/8 4. rated voltage: 110v-220v 5. max. pressure: 3bar 6. pressure setting: 1.0-1.7bar, 1.1-8bar pc-5: 1. min. pressure(on): 20psi 2. max. pressure(off): 175psi 3. joint thread: z1/4" 4. pressure setting: 20-40psi, 30-50psi, 40-60psi, 50-80psi, 70-100psi, 95-125psi, 115-150psi, 140-170psi pc-6: 1. joint screw: z/14" 2. pressure range: 20-175psi 3. with one-way valve or with four-way valve 4. pressure setting: 20-40psi, 30-50psi, 40-60psi, 50-80psi, 70-100psi, 95-125psi, 115-150psi pc-10: 1. rated voltage: 220v-240v, 110v-115v 2. max. current: 10a 3. frequency: 50-60hz 4. max. power: 1.1kw 5. joint screw: 1" 6. protection grade: ip65 7. starting pressure to choose: 1.5bar & 2.2bar 8. applications: device for automatic control of electric pumps serving waterworks. 9. features: the water pump automatic controller is whole electric and intelligentized. it can recognized the data which is checked from water source, pipe's quantum and variety pressure, starts and stops the pump. it replaces the traditional system, which is made up of tank, switch, protective device without water, check valve and four way. the control case, which can not made the electric parts separated from pipe, made the controller own security which can not compared to the traditional system. the user can save more time and material when installing by the compositive design. http://www.chnz.com email:ad@chnz.com