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Check the listing for details. PAJ7620U2 7620 I2C IIC 9 Gesture Moving Recognition Sensor Module 2.8V~3.3V New. Condition: New. Listed at 4.70 USD. The CJMCU-7620 gesture recognition sensor is a PAJ7620U2 that integrates the gesture recognition function with the universal I2C interface into a single chip. 1 x CJMCU-7620 Gesture Recognition Sensor PAJ7620U2.