Item No.: ST-99B

 12 melodies recycle or only ding-dong sound

Operating power requestion: 2pcs ‘AA’ alkaline batteries for chime

Item No.: ST-99D

12 melodies recycle or only ding-dong sound

Operating power requestion: Directly to 220V-240V main power

Item No.: ST-99T

Transformer build-in electronic door chime

8 melodies choosing by button inside of chime

Operating power requestion: Directly to 220V-240V main power