The DK702 ??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. The chip can work in a low-power environment. When the power supply is 5v, the power-saving mode of the normal working state, the current consumption of 110ua, in the sleep standby state, the current consumption of 10ua below.

DK702 ??2-channel capacitive touch sensor with self-correcting function
The DK702 ??touch sensor can use the average capacitance value as a reference to detect the capacitance change at the sensing point. It can pass any nonsense
Conductive medium to sense capacitance changes. So that the sensor module can be very good with water and dust isolation. The chip can work at low
Power consumption environment. When the power supply is 5v, the power-saving mode of the normal working state, the current consumption of 110ua, in the sleep standby
State, the current consumption below 10ua.
Features
2-channel sensor chip with self-tuning function
Can be touched by any non-conductive medium "key touch"
Adjust the sensitivity with an external capacitor
Open-Drain output form
application
Alternative switch
Detection of human body sensors
Toys and interactive games of the human interface
Light switch
Replace the diaphragm switch
Sealed keyboard panel