My UH8-RF is installed in a metal cabinet, will the RF work? November 20, 2018 08:18 Updated Follow When the UH8-RF is installed in a metal cabinet, you should use the external aerial available here. The aerial should be positioned outside of the cabinet to ensure the UH8-RF can function correctly. Related articles What can cause RF signal issues? How do I pair my Slimline-RF to the UH8-RF My wiring centre only communicates to the last thermostat I paired? What does Ls and Lr mean? I have a UH1-W, will a neoAir or Slimline-RF work with this wiring centre?