The kitchen lights are malfunctioning; The remote control does not work properly. Can I connect some sort of wired switch?
Picture of LED driver product:

The full PCB:

Partial back side of the main PCB, containing all logic level components.

The logic board (note, it is floating off the main PCB and there appear to be two somewhat similar large components and more smaller beneath).

The model identification of the board is SLD15-12VLS-UN-K-1 and to the side is another label YS813818.
Markings on the biggest components are:
This is the separate logic board:

The biggest IC is labeled PIC16F1509 "20-Pin Flash, 8-Bit Microcontrollers with XLP Technology".
The smaller one is CC2500 "Low Cost, Low-Power 2.4 GHz RF Transceiver"
How does the circuit change the color temperature? The connectors to the lights are only two poles each.
This attribute 'color temperature' might be abbreviated to CCT (Color Correlated Temperature)
Meanwhile, I tested the kitchen lights with my lab PSU at 12 V, and they worked as normal. The color temperature is not too cold either, so I don't have to do research on how to modify that. This is how the small connectors are connected:

Ultimately I decided with the easiest approach. I noticed that when the communications board is not used the power supply can be simply switched on and off with a switch on 230V line. So I attached a cable with a pull switch and it worked great.