Search hardware for Sensor Touch


i have a heatpump with integrated electric heating element. But the heatpump isnt smart, so i have to touch a sensor button to activate the electric heating element. if i’m home thats ok, but i wanted a smart PV control. so i’m searching for a solution to touch the sensor bar automatically via wlan. i found the tuya fingerbot, but its expensive and only with BT compatible. So i need a gateway too. do you know a solution? i have a nodemcu in the near of the heatpump for reading the temperatures, maybe i can use something compatible with the nodemcu.

I have tested the sensor with all conductive objects. my hand was insulated during the test. therefore, it can be triggered with any metallic object.