The 4 channel capacitive touch keypad module is based on the TTP224 chip. Using this module, adding capacitive touch switches to your project becomes very easy. It consists of 4 touch pads in single row, which can be a good replacement for old fashioned mechanical switches.

• Operating Voltage: 2.4 to 5.5V
• Build In regulator with external enable/disable option
• Operating Current: < 9 µA
• Response Time: 60 mS to 160 ms Depending on fast or low power mode
• The 4 channel capacitive touch module provides 2 output pins TPQ0D, TPQ2D that have no diode protection, active low
• Provides Direct Mode or Toggle Mode, CMOS Output or Open Drain Output, active high or active low by pad options (TOG/OD/AHLB pins)
• Provides fast mode and low power mode selection by pad option (LPMB pin)