Bodenfeuchtemessgerät Erkennungsmodul LM393 5V hochpräzise Verwendung für Arduino DIY
4,72 €
The comparator adopts LM393 chip, which works stably. When the humidity is lower than the set value, DO outputs high level; when higher than the set value, DO outputs low level. U Shape Desktop Headset Holder Walnut Wooden Headset Holder Hanger Stand Bracket.
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