Retro Adapter Mount Bracket Kit For Ring Battery Doorbell 2,3, 3+, 4, PLUS, PRO
UPGRADING FROM A RING DOORBELL 1ST OR 2ND GENERATION MODEL TO DOORBELL 2,3,4,PLUS PRO ADAPTER MOUNT BRACKET. This MOUNT Will Fit The FAT VERSION RING VIDEO DOORBELL 2/ 3/ 3+ & 4 PLUS see photo 2 for compatible.