Although Vallhorn has not yet been confirmed to work with the binding (see here) there is a good chance it will, and it also reports illumination (see here), so could be worth a try.
I am supposed to drive by the IKEA store on Friday. I will buy the VALLHORN sensors and let you know the result of my testing by the middle of next week. Thanks for the info.
I did some tests on the IKEA VALLHORN sensor and it works very well on my system (openHAB 4.1.3 on Linux Ubuntu 22.04 using a SONOFF ZigBee 3.0 USB Dongle-E Plus and the ZigBee binding).
The IKEA VALLHORN sensors even reports illumination as predicted and it is not expensive - less than $15 Canadian taxes included.