THIS IS A BRAND NEW LeFOO WATER WELL PUMP PRESSURE SWITCH FACTORY PRESET 40/60 PSI. THIS WATER PRESSURE SWITCH IS DESIGNED TO CONTROL THE ON & OFF OF WELL MOTOR/PUMPS. THIS SWITCH IS PRESET FROM THE FACTORY TO TURN ON AT 40 AND OFF AT 60. THIS SWITCH CAN BE ADJUSTED HIGHER OR LOWER THAN THE FACTORY SET PRESSURES. ADJUSTMENT INSTRUCTIONS CAN BE FOUND UNDER THE FRONT COVER.. (SEE OUR ATTACHED PICS)... PRESSURE: 40 ON 60 OFF (FACTORY PRESET AND IS EASILY ADJUSTABLE) MAX PRESSURE: 80 PSI MIN PRESSURE: 20 PSI PORT: 1/4" (NPT) SINGLE PORT FEMALE VOLTAGE: THIS SWITCH WILL HANDLE ANY VOLTAGE BETWEEN 12V & 240V