First Alert CM2837 User Manual

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First Alert® OneLink® is a line of wirelessly interconnectable alarms designed to meet the
needs of contractors that retrofit or remodel existing properties. First Alert®
OneLink® offers the same interconnected functionality as hardwired alarms,
without the wires. Because there are no wires to pull through existing walls,
First Alert® OneLink® offers a very cost effective way to bring existing
properties up to code. Using First Alert® OneLink® provides faster job
turnaround vs. hardwire retrofitting applications. Up to 4X more jobs completed
means increased profits and customer satisfaction.

WIRELESS

The product line consists of mostly battery operated alarms making installation fast and easy.
A hardwired bridge unit is used to connect existing hardwired alarms to the new First Alert®
OneLink® enabled alarms providing a complete system, old and new. With exclusive features
like Voice Warning with Location™, Optipath 360 Technology™ and Spread Spectrum Horn
Tone, First Alert has the most complete lineup of wireless smoke and CO products:

Battery Smoke/CO

Combination Alarm

with Voice

**Interconnected alarms provide added
warning as compared to single alarms.

Battery

Smoke Alarm

with Voice

Bridge Unit

120V AC Hardwired

Smoke Alarm

Battery Carbon

Monoxide Alarm

with Voice

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Question: What is Voice Warning with Location?

Answer: This is an exclusive First Alert® feature that

verbally identifies not only the danger
detected, i.e. Smoke or Carbon Monoxide, but
also indicates the location of the initiating
alarm. There are up to 11 pre-programmed
locations stored in the alarm’s memory. Included are Basement, Kitchen, Child’s
Bedroom, Living Room, Dining Room, Master Bedroom, Family Room, Guest
Bedroom, Office, Hallway, Utility Room and No Location. For example when the
alarm sounds, if programmed for “Basement”, it will say “Warning, Evacuate,
Smoke in Basement” or “Warning, Evacuate, Carbon Monoxide in Basement”. If
other First Alert® OneLink® alarms are located throughout the house they will
also announce the same warning even though they were programmed with
another location. This is a safety feature no one else has. When seconds count in
an emergency it provides an audible indication of the possible threatened area
and more importantly what area to investigate or avoid.

Question: How do the First Alert® OneLink® alarms communicate with each other?
Answer: The alarms interconnect via reliable and secure radio frequency (RF)

communication. They operate on the 915MHz frequency
bandwidth and employ 3 channel frequency hopping vs. 433MHz
non frequency hopping with the competition. If for some reason
one channel is blocked or being used by another device in the
home it automatically switches to one of three frequencies
increasing the chance that the signal will be received. This
“hopping” to the next frequency to complete the signal vs.
waiting for the next send cycle saves precious time. Seconds
count in an emergency as a home fire doubles in size every 30 seconds.

Question: How do the First Alert® OneLink® alarms link with each other?
Answer: The linking is automatic through the software with 65,000

security code combinations. This eliminates manual dip
switch programming as on the competitive product with only
255 combinations. This saves confusion, time and money on

WIRELESS

Competitive Dip Switches

**Interconnected alarms provide added
warning as compared to single alarms.

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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.

**Interconnected alarms provide added
warning as compared to single alarms.

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