Why this decision matters
Choosing the device count before defining the target task can leave important requirements outside the design.
Work through the actual task
- Identify the sleeping areas, normal entry and rooms occupied after arming.
- Ask which zones belong in the proposed part-arm mode and how entry delays behave.
- List your three priorities and ask the installer to show how the proposed design meets each one.
Worked example
A family wants the perimeter armed while someone moves inside at night. This is a hypothetical example, not a completed customer installation.
The useful evidence at the end of this example is: A zone plan with the intended full-arm and night-use routines.
Limits and follow-up
A siren, an app alert and professional monitoring are separate features. Confirm who receives a signal and what they are expected to do.
If the relevant check cannot be completed, record what remains uncertain and who will resolve it before work or sign-off proceeds.
Sources and equipment references
Checked for the product, supplier or information details used here. Exact procedures depend on the installed model; these links are not a substitute for its instructions.