Sense & Dispense + Aquarite with Omnihub

Hello,

I recently installed a Sense and Dispense (S&D) kit (for monitoring only; I do not plan to use it to dispense chemicals) with an AquaRite W3AQR3 (T9) connected to an OmniHub.

The OmniHub documentation states that the flow switch should be connected directly to the AquaRite (a post back in 2021 from another user confirmed this through trial and error). However, when I add the S&D to the OmniHub configuration, it throws an error upon saving: “A flow switch is required when using Sense and Dispense.” The only way to successfully add the S&D to the OmniHub is to include a flow switch in the configuration.

The OmniHub configuration manual confirms that a flow switch is required for S&D, but this seems contradictory to another section of the manual that instructs users to connect the flow switch directly to the AquaRite.

Questions:

1. Does this mean I need two flow switches (one for the AquaRite and one for the OmniHub)?
2. Does adding a flow switch to the OmniHub override the AquaRite’s flow switch ?
3. While connecting the flow switch to the OmniHub appears to work, is this setup as safe as connecting it directly to the AquaRite?
4. Is there any disadvantage to adding 2 flow switches one to the AQR and one to the omnihub?

I'd like to ensure the system safety without making any assumptions. Thanks in advance for your guidance!