supply multiple class IC: music IC, voice IC, flash lamp IC, recording IC, chords music IC, candle lamp IC, doorbell IC, sound effects IC, toys IC, greeting cards IC,OTP voice burn IC, mask film IC, and transistor music IC has: transistor phone Bell IC, three level tube doorbell IC, three level tube alarm IC, three level tube flash lamp IC, to Alice, Waltz, little world, birthday happy, love story, sweet of home, Ding Dong doorbell, BIBI sound, DIDI tone. Transistor Flash IC: frequency 1.5HZ,2.5HZ. model: BT66T-02L,UM66T-19L,BT66T-19L,ZL66T-19L,BT66T-05L,M66T-32,M8031-2S,HY66T-22,HDR01,BT8031-04,BT8028C-XX,BT8031-XX,TD08-F1,M34-1L,UM3561A,BM66T-18L,UM66T-68L,HK66T-19,A66T-19L,UM66T19 L/S,M66T-32,BT66T-26L,BT66T-35L,BT66T-53L,BT66T-69L,BT66T-PR,BT66T-57L,BT66T-65L ,BT66T-ALIS ,BT8032 ,BT66T-28L,BT66T-12L,UM3561,BT66T-68L,FT66T-35L,FT66T-2P