Transformer Doorbell Wired 40w Go to amazon.com Related posts Top 15 best 24v transformer doorbell: Which is the best one in 2022? Feature"LAMSON" DOOR BELL TRANSFORMER24 Volt.40 watt.2-1/2x2x2-7/8" .Transformer DescriptionHighlights: Transformer 24 Volt 40 Watt 2-1/2x2x2-7/8" For chimes, bells or buzzers