The Wedeco Ideal Horizons DLR M series is the precursor to the Wedeco Aquada Maxima series prior to their merger with ITT Industries/Xylem. Due to different standards, the DLR series had higher flow rates compared to the Aquada series. The DLR M4 has a max flow rate of 18 gallons per minute and is their advanced system. The DLR M4 offers UV water disinfection with additional features such as micro-computer controller, visual and audible alarms, easy button reset for alarm and computer, and a power connection for an optional solenoid safety shut-off valve. The DLR M series also comes with a UV intensity monitor and digital display.