Capacitive touch sensor switch for Arduino details

Touch keys detect IC, provide 1 touch keys. Touch detection IC is used to replace the traditional variable area keys and button key. The low power consumption and wide operating voltage are the DC and AC features of the touch keys.Working voltage 2.0V~5.5V,the power need  about 0.5sec of the stability time, this time do not touch the key,At this time all functions are prohibited,Always self calibration,When the bond is not touched, the weight of the calibration period is about 4.0sec,