How do I connect the Tuya RTX dimmer to 16W/m LEDs and 2x300W power supplies?

Hello,
I'm doing a suspended ceiling in the living room and around all the LED. I have 2 circuits there, power supplies 2x300W, because LED 16W/m.
I wanted to install this switch with a dimmer, because that's what I'm giving the LED power for, to control it.
I ordered a Tuya RTX doped dimmer and for this some double bistable switch.

I read the specification and there it says power max 2x100W.
Please tell me if this is about the power supply, that would be logical as 230V is 100W, or is it that I can max plug in a 2x100W power supply? .

It is unlikely that the input power supply does not control the supply voltage in the case of an arguably pulsed power supply for leds. The brightness is controlled at the input of the power supply to the led strip, i.e. already at 0 - 12 volts.

>>21346569 .
Another question I had was what the specification means by power 2x100W
Is this about the led power supply max 100W or powering the controller?

Is anyone able to help?