QO 15-Amp Single-Pole Arc Fault Circuit Breaker Screen Door Closer help reduce ph drift &

help reduce ph drift & erratic changes when adjusting the ph by testing the total alkalinity each week & maintaining it between 60 & 120 ppm

& "aa" batteries

Short Neck

Fiberglass Nylon Casing

QO 15-Amp Single-Pole Arc Fault Circuit Breaker Screen Door Closer help reduce ph drift &The Square D by Schneider Electric QO 15 Amp Single Pole Combination Arc Fault Circuit Interrupting (CAFCI) Circuit Breaker is for use to help protect your wires from arcing faults and is intended for overload and short circuit protection of your electrical system. Now standard in all Square D brand CAFCI circuit breakers, Time Saver Diagnostics provide advanced trip indication technology, helping identify the type of fault that has occurred faster.