The range has low contact resistance switching for compatibility with the low voltage/low current switching found on many boilers. 

The three port MPEs incorporate a market leading 6Watt Class F motor, with high start-up torque to ensure start-up after prolonged shutdown.

Maximum Operating pressure 10 Bar, Maximum water temperature 95°C, Minimum water temperature 5°C, Maximum ambient temperature 52°C, Electrical 5W/6W double insulated 230V/50Hz.