Ding/Dong Door Chime COB Module (Kit)
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Description: Ding/dong door chime the classic door chime ding dong. Adjust the component values in the two RC networks to get exactly the tones you want. 3V and low standby current.
1 x Switch
1 Watt 8 ohm speaker
2 x AA battery holder
COB and mother board
COB PCB size: 16mm x 29mm