HTTM Capacitive Touch Model

HTTM is HelTec Touch Model shorthand, which no mechanical parts, no wear, infinite life, reduce maintenance costs later. The sensing part which can be placed in any insulating layer (usually a glass or plastic material) behind, it is easy to seal with the surrounding environment into the keyboard, in order to play the role of moisture and water.The panel arbitrary pattern, button size, any shape design, characters, trademarks, and other transparent window with arbitrary, so that the overall stronger sense of product. Compared with the physical buttons, touch buttons and more difficult to damage. You can modify the resistance of the back, adjust the output signal of the latch output or keep the output level( default is not welding the resistance, so it is latch output mode). Latch output mode: When touch it, the OUT pin output high level, and the touchpad backlight lighting, when touch again, OUT pin output low level. Keep output mode: When keep touch it, the OUT pin output high level, and the touchpad backlight lighting, when remove the hand, OUT pin output low level. Features: + 2.7V ~ + 6V wide input voltage range, + 3.3V signal output can be directly used to drive relays, optocouplers, LED lights and other original document -30 ~ + 70