#Philips says that s discontinued Do you
wintry pumice
Here is the list of models that the custom component is aware of: AC1214, AC2729, AC2889, AC2936, AC2939, AC2958, AC3033, AC3036, AC3039, AC3055, AC3059, AC3259, AC3829, AC3858, AC4236, AC4558, AC5659. Don't remember what I paid for mine, but it wasn't that much!
And here is the custom component that I am using: https://github.com/betaboon/philips-airpurifier-coap
Still seems to be for sale: https://www.philips.co.uk/c-p/AC2889_60/2000i-series-air-purifier
£290
acoustic trout