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DK709
The DK709 touch sensor can use the average capacitance value as a reference to detect the capacitance change at the sensing point. It can be through any non-conductive medium to induce capacitance changes. So that the sensor module can be very good with water and dust isolation. DK709 has a stronger anti-jamming and better consistency.

DK709 9-channel capacitive touch sensor with self-correcting function
The DK709 touch sensor can use the average capacitance value as a reference to detect the capacitance change at the sensing point. It can pass any non-lead
Dielectric to sense capacitance changes. So that the sensor module can be very good with water and dust isolation. DK709 has a stronger anti-jamming and
Better consistency.
Features
9-channel sensor chip with self-tuning function
Can be touched by any non-conductive medium "key touch"
Adjust the sensitivity with an external capacitor
The length of the PCB trace of the sensor keys does not lead to different sensitivities
I2C interface
Operating voltage range: 2.5v ~ 6.5v
application
Liquid height detection
Alternative switch
Detection of human body sensors
Toys and interactive games of the human interface
Light switch
Replace the diaphragm switch
Sealed keyboard panel