TTP223B Digital Touch Sensor Capacitive Touch Switch Module
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Be careful. The power supply must be stabilized and the negative pole must be well grounded. 2.5 - 5 volts recomended. I burned 5 of them until I realized that my power supply was not grounded correctly. Vey good operation, very fast. It has 4 different modes, which are not explained here. There are 4 contucts that you can short them to select mode. The chip is TTP223B. Very good chip. See spect to understand the operation and the 4 different modes.
Mine had a lot of soldering flux on it, but no problems when using it.
It's of good quality It has been successfully tested You can see the attached video for more details
buon prodotto per costare così poco, dimensioni molto ridotte
Very good product. Really small size which fits very well when you have limited space.
Parfaitement bien me convient enormament. Seul bémol : la couleur... elle est bleu.
llego en buen buen estado y funcionable 100% recomendable. llegó hadta Tuxpan veracruz. República mexicana
just tecd.
bon produit. je recommande
it's good and perfect circuit. fast delivery than I expected.good performance.