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At power up, all B441 LEDs activate for 
several seconds, indicating proper insertion. 
The Signal LEDs then turn off  until the 
module registers on the cellular network. 
Registering a new module might take up to 2 
minutes.

Check the LED display to ensure a good 
signal strength level, and adjust the antenna 
location as required. The signal strength 
LEDs momentarily turn off  to indicate the 
module has measured and updated the signal 
strength status. Refer to 

Table 3.1.

3 |  Diagnostic LED 
descriptions

The B441 provides IP communication over the Verizon cellular network by directly connecting the 
module to the control panel. The control panel can be confi gured for IP alarm reporting, remote 
access, or personal notifi cation messages over the cellular network.
The B441 module requires active cellular service to communicate.  Bosch Cellular devices are 
shipped pre-activated with Bosch Cellular service. 

Callout ― Description

1 ― Module handle and support leg

2 ― LEDs

3 ― Threaded female SMA antenna connector

4 ― Plug-in module retention clip opening

5 ― PCB metal contacts

Figure 1.1: Module overview

CAUTION!

Remove all power (AC and battery) before making any connections. Failure to do so 
might result in personal injury and/or equipment damage.

2 |  Install or remove the module

1 | Overview 

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2.1 |  Install the antenna

Installing the antenna:
1. 

Place the magnetic antenna on top of 
the enclosure, or vertically  on another 
metal surface. 

2. 

Route the antenna cable through a 
knock-out.

3. 

Connect the antenna cable to the 
module.

4. 

Secure the antenna cable to the inside 
of the enclosure.

Figure 2.2: Wiring the antenna

Callout ― Description

1 ― Antenna routed though any knock-out

2 ― Antenna cable connected to the 
module

To remove an installed module, hold the plug-
in module retention clip open with one hand 
while grasping the top corners of the module 
support handle with your other hand. Pull 
the module out.

2.3 |  Remove the module

Installing the module: 
1. 

With the module facing the control 
panel as shown below, insert the 
support leg into the support hole 
labeled X. 

2. 

Align the PCB metal contacts with the 
on-board connector.

3. 

Push the module into place. The 
retention clip snaps closed and secures 
the module in place.

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Figure 2.2: Module installation

Callout ― Description

1 ― Support leg inserted into the control 
panel support hole labeled X

2 ― PCB metal contacts resting on the 
on-board connector

3 ― Plug-in module retention clip

2.2 |  Install the module

The control panel communicates with and 
provides power to the module through the 
plug-in connection. Proper installation results 
in the necessary electrical and mechanical 
connection.

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