10 Pcs TTP223 Touch Key Switch Module Touching Button Capacitive Switches Self-Locking/No-Locking Module 2.5-5.5V

These were a fun addition to a DIY project I am doing with my 8 year old daughter. You do not actually have to touch the sensor, just get your finger close enough, which was great because it worked through the shrink wrapping we put over the button. The only thing I wish was different was the light that goes off when the sensor is activated is helpful for troubleshooting, but was a little brighter than I liked for our project. Not a huge deal though.

These work perfectly. I'm converting a couple of my wife's table lamps into touch lamps. I'm running these at 3.3V and they are awesome.

These are really nicely done, stick inside things with glue or thin double stick tape, and work really well. The sense electrode is on the side opposite the components for a nice close fit. I can activate them with a finger at about 4mm - not even touching them.