OH3 IKEA Tradfri remote control with zigbee2mqtt

It looks like it isn’t reporting anything other than it’s _1_dimmer channel, although in my .items file I have it defined as

Switch Switch_UL_TestSwitch "Tradfri Test Switch" {channel="zigbee:device:7e7c171ea7:8cf681fffe2884d2:8CF681FFFE2884D2_1_dimmer"}

I’ve also tried

Dimmer Switch_UL_TestSwitch "Tradfri Test Switch" {channel="zigbee:device:7e7c171ea7:8cf681fffe2884d2:8CF681FFFE2884D2_1_dimmer"}

But any rules based on ‘received update’ such as

rule "Ikea Switch changed"
when
    Item Switch_UL_TestSwitch received update
then
   do something
end

Do not seem to fire.