Home Security System - Home Alarm System User Manual
  Page 3 of 9    CM2837 
**Interconnected alarms provide added 
warning as compared to single alarms. 
installation. With First Alert® OneLink® there is an extremely small chance of a 
duplicate code programmed in an adjacent apartment’s units as with the 
competition. No trying to remember dip switch locations for each apartment’s 
units. Easier programming means a more cost effective installation. 
 Question:  What is a “Mesh Network” and how does it work? 
 Answer: First Alert® OneLink® alarms operate on a “mesh network”. All of the First 
Alert® OneLink® alarms send, receive and resend the initiating alarm’s signal. 
The competition only sends and receives or is a one-way communication. It does 
not resend. Why is this important? In the following illustration, the initiating 
alarm is in the basement. Let’s say the signal is blocked from reaching the 
Master Bedroom alarm either by distance or some obstruction in the home. With 
First Alert® OneLink®, the mesh network of alarms re-routes and resends the 
signal via the other alarms, providing a greater chance all alarms will receive the 
signal. With the competition, only the initiating alarm is sending a signal. 
Therefore, the Master Bedroom never receives a signal and is deadly silent. The 
“mesh network” is a more reliable means of wireless communication. Again, 
seconds count in an emergency. 









