Suggested Retail: $18.83. ChooKaChoo Doorbell Transformer for Ring Video Doorbell 16v 30va Hardwired Doorbell Chime Transformer Power Supply Compatible with Ring Nest Hello Wyze and Eufy Video Doorbells - 16V Hard Wired Transformer for Ring Video Doorbell. Compatible with Ring Doorbell Series: 2020 Release Video Doorbell 3/4/Plus Video Doorbell Pro/Pro2. The adapter is a quick and convenient way to charge your smart doorbells continuously, solving the 'low battery' issue. It is capable for single or multiple door chimes use in one house. The transformer has been tested 100% safe with over current protection, overload protection and short circuit protection. Brand: ChooKaChoo Model: 001 -- LOT STICKER: TCE-BOX-BOXTCED0968-ITEM-b624d8a3___LPNAC795842708 Doorbell Transformer for Ring Video Doorbell, 16v 30va Hardwired Doorbell Chime Transformer Power Supply, Compatible with Ring, Nest Hello, Wyze and Eufy Video Doorbells -- SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.