I bought an IR remote control on Aliexpress and made a diy remote control there. I taught all the functions of the remote control there, then I created scenes in Tuya and thanks to ifell being enabled, information about the temperature is sent in the remote control and in the Tuya application the scenes activate the appropriate functions with an appropriate delay, which causes modulation of the unit. It looks like this, when the temperature on the external thermometer connected to the tuya reaches x degrees, the scene starts: turn on heating 23 degrees, delay 10 seconds, turn on heating 19 degrees, delay 4 minutes, heating 21 degrees. After this start, the unit reduces to 250W and then slowly increases the power.