Features The board is equipped with a capacitive 4-button touch induction IC TTP224. High quality TTP224 4-channel digital touch sensor module. The board is equipped with a 4-channel status indicator, easy to use and practical. 2.4V-5.5V working voltage, compact structure and small size, convenient to use. The module can set the output mode, button output mode, long output time and selection between fast and low power. Specification: Condition: 100% Brand New Item Type:Touch Sensor Module Working Voltage: 2.4V-5.5V Pin Description: OUT1-OUT4: module output pin GND: the module is connected to the ground of the external circuit VCC: connected to the power supply. Board size: approx. 35 x 29 mm / 1.4 x 1.1 inches. Package list: 5 x modules Package List 5 x Module