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Limitations and notes

  • Crestron Home 4-series. The driver is built on the Crestron Home entity model and loads as an extension device (Audio Processor).
  • Ten chimes. Each site has ten configurable chimes, fired by TriggerChime 1–10. That is a fixed number.
  • Speakers must support Sonos audio clips. Chimes play through the Sonos audio-clip feature. Most modern speakers support it; older ones may not, and the setup app greys those out with the reason. A greyed-out speaker cannot play a chime — a Sonos limitation, not a driver fault.
  • Internet and DNS are required. The driver talks to the Sonos cloud, and Sonos streams every chime from a public URL. A processor on an isolated network cannot play a chime. See Service lifetime and your audio for what depends on the cloud and what keeps working without it.
  • Custom audio limits. Two uploaded chimes per site (MP3, up to 2 MB and 10 seconds each) and four saved announcements per site. Self-hosted chime URLs must be https:// — Sonos will not fetch an insecure link. See Custom chimes and announcements.
  • ChimeLevel sets the house default only. A chime pinned to its own volume is deliberately unaffected. To make a chime follow ChimeLevel, leave its volume on default.
  • A repeating chime must be stopped. A chime set to repeat 0 times repeats until stopped — a scene, schedule, or the tile's Stop button has to call StopChime, or it rings indefinitely.
Not an in-place upgrade from the previous driver

SONOS Chime V2 is a new driver and does not carry a previous installation's settings over. A site running the previous SONOS Chime driver must be commissioned again: re-enter the licence key, reconnect the Sonos account, and rebuild the chimes in the setup app. The licence key still works — V2 keeps the same product SKU. Text-to-speech announcements must be re-typed in the new setup app, but are now included with the licence rather than a separate subscription.

Setup app has no authentication

The browser setup app's API is unauthenticated, in common with LCD's other Crestron web components. Any host on the customer's LAN can list the chimes and trigger one. This matches the previous driver's behaviour. The Sonos account tokens and credentials are never exposed through it.