Simple do-it-yourself electronic doorbell

I reveal the secret of how to make an electronic doorbell. The basis of the call is the HS-088 board. The wired bell circuit contains a minimum of details and after assembly will work reliably for a long time. The circuit forgives some gross installation errors.
#DIY # call #sekretmastera
HS-088 board alii.pub/601d72
SS8050 transistor alii.pub/601dda
Loudspeaker alii.pub/601dic
AA battery holder alii.pub/601dm1
Call button alii.pub/601dor
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