Product description This module is based on a touch detection IC ( TTP223 ) of capacitive type touch jog switch module. This touch detection IC is designed for replacing traditional direct button key with diverse pad size. Specifications: Power:2.5-5.5V Trigger setting mode:(1->Short;0->No Short) AB=00:No-lock High TTL level ouput; AB=01:Self-lock High TTL level ouput; AB=10:No-lock Low TTL level ouput; AB=11:Self-lock Low TTL level ouput Size: 15mm x 11mm \0.59"x 0.43" (LxW) Net weight: approx. 8g Package Included: 10x Capacitive Touch Switch Button Self-Lock Module