Hello mrsdriver5 and thank you for your interest in Moen products! The Moen MotionSense AC Adapter with Y-Splitter can be used alone, however we recommend using it in conjunction with the battery pack in the event of a power failure. The batteries should be changed approximately once a year, depending on usage. The light will flash indicating new batteries are needed. If you have additional questions, please feel free to call us at 800-289-6636. Our business hours are 9:00 a.m.-5:30 p.m. Eastern Time Monday through Friday.
I don't know. It is not the model number for my MotionSense Wave faucet (although the description sounds like the same one) but I purchased mine in 2018 so the model number could have changed. The adapter model number changed from what was in the instruction paperwork.
Hello Homer and thank you for your interest in Moen products. The Moen MotionSense AC Adapter with Y-Splitter is compatible with the Moen Essie 87014EWSRS Wave MotionSense kitchen faucet. If you have additional questions, please feel free to call us at 800-289-6636. Our business hours are 8:00 a.m.-7:00 p.m. Eastern Time Monday through Friday.