Just because a bell box can act as a deterrent; doesn’t mean that’s all it should be good for.
Dummy boxes are all well and good as long as they are a support act for a functioning bell.
Some mainstream companies think it is okay just to install dummy bell boxes, because it is cheaper than having to install an active one.
This is hugely irresponsible and diminishes the effectiveness of the entire security system.
It might be clean and branded… but it should work too!