If it is still sold where you live. The TRÅDFRI repeater seems to have been discontinued in North America. Also I've read reports that it's Zigbee radio is not as strong as the outlet.
I bought 5 of the TRÅDFRI outlets 2 years ago (mostly to help keep Aqara/Mijia devices on my mesh). A year ago one of them started to fall off the mesh every few days. About a month ago another one fell of the mesh and the LED blinks rapidly. Those two are now in the electronics recycling box. Of course, when I bought them they were US$9.99; now they are US$12.99. I know because just before the 2nd one failed I bought 3 more.
Everything I've read says the Ikea TRÅDFRI button is not standard Zigbee and will not work with Hubitat.
