HK522
DOOR BELL IC
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3 KIND DOOR BELL SOUNDS
Features
＊Built 256 musical notes ROM memory with dual tone musical effect in IC body
＊3 independence song to be playing from 3 trigger pins ( TG1 , TG2 , TG3 )
＊1 sequence trigger ( SQ pin ) for 3 songs output when SQ pin had sequence triggered
Application
Door bell , Door phone , Clock melody , Alar...
