The Aquavar SOLO 2 from Goulds Water Technology, a Xylem brand, is a constant-pressure controller that automatically monitors household water demand, delivering constant pressure when multiple water sources are in use. The controller is compatible with any manufacturer’s motor and can be retrofit to all conventional systems. It is designed with a user-friendly information center that includes a fade-resistant LED display showing system pressure, speed and current, as well as an error log. It includes a dual setpoint and a programmable output relay that can control another device such as a pump or send a status signal to a monitoring device. An integrated output motor filter protects the motor from voltage spikes and limits electrical interference with devices like telephones, televisions and garage door openers. It contains a soft-start motor that requires less energy at startup and extends the pump and motor life. 866/325-4210; www.goulds.com.