ITEM NAME:TTP224 4- Channel Digital Touch Sensor Module Capacitive Touch Switch ButtonJC&f Description Onboard TTP224 campacitive 4 key touch induction IC. Onboard the 4 way level indicator. Module can set the output mode,output longest time,and fast/low power selection. Operating voltage:2.4V-5.5V. PCB board size:35(mm)×29(mm). Colour: As Picture Package included:.Onboard TTP224 campacitive 4 key touch induction IC. 1 TTP224 4-way capacitive touch switch digital touch sensor module switch button. Onboard the 4 way level indicator. Colour: As Picture.