product description The capacitive touch sensor module uses the TTP229 integrated circuit to easily add capacitive touch inputs to your project. With 16 sensitive touchpads, it is an ideal replacement for an older keyboard. specification ? On-board 16-key TTP229 capacitive touch sensor IC ? On-board power indicator LED ? Operating voltage range: 2.4 V to 5.5 V. Configurable output mode ? PCB size: 49.3 mm x 64.5 mm
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