5pcs DIY NE555 Ding Dong Bell Doorbell Module Kit DIY Music DIY Electronic Production Training Kit
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Product details
Condition
New
Location
International
Bob Shop ID
615106222
Description: ? The kit is a circuit for a bell that can make ding, dong sound.
It is composed of a time base circuit integrated block and peripheral components.
It has a beautiful sound quality, easy to install, low cost and low power consumption.
Its working voltage is DC3V-12V.
It is usually powered by a 9V laminated battery.
The higher the voltage, the louder the sound.
Since the speaker is not in the box, the sound phase in the front and back of the plate counteracts the volume and the volume is smaller.
You can load the carton to raise the volume.
Board size: 29 x 39mm ? Package Included:
5 x?DIY NE555 Ding Dong Bell Doorbell Module Kit
It is composed of a time base circuit integrated block and peripheral components.
It has a beautiful sound quality, easy to install, low cost and low power consumption.
Its working voltage is DC3V-12V.
It is usually powered by a 9V laminated battery.
The higher the voltage, the louder the sound.
Since the speaker is not in the box, the sound phase in the front and back of the plate counteracts the volume and the volume is smaller.
You can load the carton to raise the volume.
Board size: 29 x 39mm ? Package Included:
5 x?DIY NE555 Ding Dong Bell Doorbell Module Kit