9V-24V 3A 72W Adjustable Power Adapter with LED Display, Multi-Voltage 100V-240V AC to DC 9V 12V 15V 16V 18V 19V 20V Universal AC/DC Variable Power Supply, Various Voltage AC to DC Converter

NO RETURNS ON THIS PRODUCT. It is impossible to determine the cause of failure.

• Use Only on 500, 750 gph pump.
• Make sure (+/-) Positive/Negative wires are correctly hooked up.
• Do Not use on 1100, 2000, 3000, or 4000 gph pumps.