Atticus Electronics Door bell Contractor Kit, Hard Wired, 2 notes 75dB, Includes Two White Push Buttons (One lighted, one non-lit) and One UL Listed Transformer (Input 110VAC, Output: 16VAC, 10VA);

Doorbell contractor kit which includes a white door chime cover (183.0mm(7.204")x102.0mm(4.016")x51.0mm(2.008")), two-tune beautiful echoed chime (ding and ding-dong) at 75dB, two wired push buttons (one brushed-nickel lighted button and one non-lit button for two doors), screws and a UL listed transformer (Input 120V, Output 16VAC 10VA). Can replace old door bells easily, many instruction videos online