Sensors For Arduino

TTP223 Touch Sensor

Posted On July 6, 2019 at 10:07 am by / Comments Off on TTP223 Touch Sensor

Supply2.0 to 5.5V DC
Response timeMax About 60ms At Fast Mode, 220ms At Low Power Mode At Vdd=3v
Sensor oscillator1 Mhz
Operating Temperature-20 to +70 deg C
Storage Temperature-50 to +125 deg C


This is a simple touch sensor module. You can use it to replace a traditional push button. Using the TTP223 touch detector IC It measures the capacitance of a metallic pad. It can detect the change in capacitance when a finger is near it. This is the same technology used in the iPhone touch screen.This little sensor can “feel” people and metal touch and feedback a high/low voltage level. Even isolated by some cloth and paper, it still can feel the touch. And the sensetivity well decrease as isolation get thick. 


  • 2.0-5.5V DC supply
  • response time max about 60mS at fast mode, 220mS at low power mode @VDD=3V
  • Low power consumption
  • 2.0cm x 2.0cm twig module
  • Power indicator led