Capacitive Touch Sensor Symbol?

Hi,

Does anyone know what the Schematic Symbol is for a Capacitive Touch Sensor such as for the circuit beneath “How it Works”, shown here;
https://playground.arduino.cc/Main/CapacitiveSensor/

I did find the following listed under “Proximity Sensor Symbols”, but I’m unsure if its correct?

Screenshot attached.

Regards,

Dizzwold.

Screen Shot 2020-01-05 at 17.05.43.png

https://www.electrical-symbols.com/electric-electronic-symbols/sensors-transducers-symbols.htm