Photo: jdx · CC BY-SA 3.0
Active buzzer module
Beeps with its own fixed tone when its signal pin switches it on: no tone() needed. For alarms and simple signals.
See the price in the shop
Where to buy
Uzum MarketUzum Marketdagi qidiruv natijalari · Delivery on the seller’s terms · All of UzbekistanSee the price in the shopBuy
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An active buzzer has its own sound generator inside, so one digital pin is enough. Modules differ: some beep when the pin is HIGH, others when it is LOW. Test yours with a short sketch first.
A passive buzzer looks the same but stays silent without tone(). Check the listing.
