Adjustable reliable Timer up
The inverter supplies the voltage for the 555 timer (lower RC for one second impulse)
1) Switch off the impulse and/or the power button.
2) set the time for each display using the tap button to load.
3) turn on impulse and power button.
The yellow LED indicates ticking...
Device will stop reaching 00 and the red LED gives signal to be used for further devices.
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