New NE555 Duty Cycle Frequency Adjustable Square Wave Signal Generator Module
1,17 €
Main chip: NE555;. Output with LED indication (low level ,LED will on; high level, LED will off; low frequency, the LED flashes);. Output amplitude: 4.2V V-PP to 11.4V V-PP. Input current: >=100MA. I am sure it the right thing you need now.
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