Review on Doorbell Power Supply Adapter Transformer by George Evans

I bought this to avoid frequent tedious calls and to charge the doorbell battery. HOORAY! . WORKS PERFECTLY! But . Please follow these tips: 1) Check your device's voltage instructions before purchasing. This matched the recommendations for my base RING model. Yours may be different, so check carefully. 2) Also, I need to have AC/AC. This is important, so check the requirements for your device model. 3) START SAFELY WITH A FULLY CHARGED BATTERY. If they don't, and there's a lot of motion activity records, they'll quickly deplete and not catch up, giving the impression that the power (and my RING) has failed. Luckily I had the patience and a few very quiet days with little physical activity so it eventually started to build up a charge but it took a few days to fully charge and start working. Once fully charged it stayed at 100% the whole time and I absolutely love it! No more hassles with frequent, tedious battery charging and ridiculously tiny, inaccessible screws on my RING case. With this power supply it was "once and done"! I couldn't be happier!