ITEM NAME:For Arduino TTP229 16 Channel Digital Capacitive Switch Touch Sensor Module O4S4 For Arduino TTP229 16 Channel Digital Capacitive Switch Touch Sensor Module O4S4 16-key board TTP229 capacitive touch sensor IC Onboard power indicator Working voltage: 2.4V-5.5V The module can be set to output mode, the key output mode, the longest time and fast output / low power options PCB board size: 49.3 (mm) x 64.5 (mm) Material:CCL Colour:Blue Package Included:1 x TTP229 16 Channel Digital Capacitive Switch Touch Sensor Module for arduino Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..16-key board TTP229 capacitive touch sensor IC. Onboard power indicator.