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Adjustable gain and integration time
GPS receiver
Overvoltage protection
RED: Power (12V)
High quality speech module for English and Chinese languages
Capacitive Touch Sensor (TTP223-B) Coin Acceptor Machine Adjustable gain and integration timeIntroduction : Digital Capacitive Touch Switch Module is based on TTP223B. Normally,it outputs low and keeps at low power state. When a touch is sensed on the circular marked region, it outputs high and switch to the quick response state. When not being touched for 12 seconds, it switches to low power state again. If the module is mounted in the surfaces of non metallic materials such as plastic, glass, acrylic, you can make the keys hidden in the