4 x 4 keypad module is a module with 16 buttons and each button has a character, number, and symbols. This keypad module is used in input projects.Feature:
Easy to interface with the controller, processor, and Arduino Adhesive backing  ..
1 Channel Capacitive Touch Module - TTP223
This board is a quick demo board for capacitive touch sensing IC TTP223. You can use it to detect and switch on external units using external relay.
Onboard TTP223 capacitive touch sensor IC
TTP229 Capacitive Touch Sensor Module (16 channels)
The TTP229 capacitive touch sensor module is perfect for adding capacitive touch inputs to your project.
This capacitive touch sensor module uses the TTP229 integrated circuit, making it easy to add capacitive touch ..