The Halo Home RL4 is an integrated LED module with Bluetooth mesh connectivity for 4" aperture recessed downlights. When paired with the Halo Home mobile app or Halo Home wall controllers, the RL4 can be wirelessly controlled. Suitable for new construction, remodel and retrofit installation. Listed for use with Halo 4" housings and classified for use with other 4" housings, airtight and can be used with housings in direct contact with insulation. The Halo Home RL4 Series is designed to connect to the Halo Home Bluetooth network with no hub or internet connection required.