Key Switch Modules
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Decsription
Pushbutton is also called light touch switch, when used to meet the operating force conditions to the switch operating direction of the pressure, the switch is closed on; when the withdrawal of pressure when the switch that is disconnected, its internal structure is to rely on the change of metal shrapnel force to achieve the on and off. As shown in the figure, under normal circumstances, pins 1 and 2, 3 and 4 of the button are connected; when we press the button, the four pins are connected to each other; when we release the button, the normal state is restored. After our module is connected normally, the red power light of the module is on, when the key is pressed, the module outputs a low level, and the blue light of the signal is on, and when it is released, the blue light is off and a high level is output.
Schematic
G
GND
V
VCC
S
Signal digital output, low when pressed, high when released
Size
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