Exciting news! Tapo is actively developing a new feature that will enable multiple Chimes or Hubs to ring simultaneously with the Tapo Doorbell. Both your app and device firmware will require an update to support this feature. For the Hub, the necessary firmware details are as follows: Models Planned firmware version Status H100 1.5.10 Released H200 1.3.5 Coming Soon Please make sure to check regularly for updates to both your app and device firmware. This update is essential as it will allow your Tapo Doorbell to utilize the new feature effectively. Please note that the specific support time and firmware version may vary based on the actual update.