Status LEDs indicate network and module status. The following image shows the location of the status LEDs on the DSC PowerSeries Pro cellular module (TL880LE/LT).
LED functions
L1 General and cellular error LED. L1 flashes 1 to 8 times in an 8-second interval to indicate specific error.
L2 Broadband errors and panel communication. Flashes 2 to 8 times in an 8-second interval to indicate a specific error on the broadband path. Also flashes once every time the module communicates with the panel.
L3 Cellular Communication. Flashes every time the cellular signal level is checked and when packets are exchanged with Alarm.com
L4 Cellular Signal Strength Level. Flashes 0 to 5 times to indicate signal strength or toggles on/off slowly when communicating with Alarm.com servers
L5 Z-Wave status and errors
See the below posts for more information on individual LED details
L1 flashes when there is a general error or an error on the cellular path. The number of flashes indicates the error number. If there are two or more errors at the same time, the errors flash one after the other. The LED stays off for at least 4 seconds between errors.
Note: It may take up to 10 minutes before L1 detects and flashes an error code.
LED pattern
Device error and solution
1
Module cannot communicate with the panel.
2
The SIM card is missing. The SIM card holder can be found on the module. Verify that the SIM card holder is closed securely and that there is a SIM card in the holder.
3
The module is trying to register on the cellular network. If it persists for more than a few minutes, the module is having problems registering with the cellular network.
4
The module is registered on the cellular network but cannot connect with Alarm.com.
5
Radio portion of the module is not working correctly.
6
This is an error only if it persists for more than a minute. Otherwise, it is just an indication that the module is fixing an unusual condition regarding communication with the cellular network.
7
The module is not compatible with this panel type. Please insert a compatible module
8
If it persists, the Alarm.com account may have been set up incorrectly.
LED Pattern 1 Resolution
Verify section [382] option [5] is ON.
Verify panel software is version 1.01+.
Check the connectors (between the panel and communicator).
Power cycle the panel.
If the error persists, there may be an issue with the module or panel.
LED Pattern 3 Resolution
Check L4 for signal level.
If signal level is lower than 2 bars, change the panel’s location or use a remote antenna option.
If the signal is good, the module may be roaming on a cellular network that does not partner with our cellular providers, or the SIM card was not activated yet because the Alarm.com account was not created correctly.
LED Pattern 4 Resolution
Power down the module, wait one minute, restore power and perform a communications test.
Verify signal strength and try a different location for the module/antenna.
LED Pattern 5 Resolution
Verify power.
If power is sufficient and this persists for more than a few minutes, the module may need to be replaced. This error is extremely rare so verify that the module is flashing 5 times.
LED L2 indicates an error on the Broadband path and also flashes with every communication between the module and the panel when there is no error condition present. Normal pattern calls for a series of quick flashes every two seconds in Idle mode or four seconds in PowerSave mode.
LED pattern
Device status or error
1
Flashes for each communication with the panel, except when LED is displaying a broadband error. This is normal behavior.
2
The Dual-Path LTE module cannot establish a connection with the router.
3
The Dual-Path LTE module cannot establish a connection with the internet. Verify other devices on the same network can connect, that the panel has AC power, and that there are no special firewall or network management settings running on the router.
4
The Dual-Path LTE module cannot establish communication with Alarm.com.
6
The Alarm.com backend cannot reach module due to an error with the local firewall blocking signals from reaching the module.
LED Pattern 2 Resolution
Verify the physical connection/wiring to the router.
Verify MAC filtering is disabled on the router or add the module’s MAC to the allowed list of MACs on the router.
L3 flashes with every communication between the module and its radio unit in Idle mode, and with every communication with Alarm.com in Connected mode. In PowerSave mode, this LED flashes in unison with LED 2.
LED L4 (green or yellow)
L4 indicates the LTE signal level as a number of flashes (0 to 5 bars). The number of bars may not correspond to the bars shown on your cell phone. A level of 5 bars is obtained only in the strongest signal conditions.
Signal level is updated every ten seconds if it fluctuates, or every 30 seconds if it is fairly stable. If L4 is not flashing it indicates one of the following states:
The module is in PowerSave Mode.
The module just powered up.
There is no cellular coverage in the area. Alarm.com recommends a steady signal level of two or higher for proper operation of the module.
There are four module states, or modes, as described below.
Note : If the cellular module is powered down for a short period of time, buffered messages from Alarm.com may be received when module power is restored.
Idle mode
AC power is okay and the module is not currently talking to Alarm.com.
L1 - Flashes general or cellular errors, if any
L2 – Flashes broadband errors, if any; Communication with panel
L3 - Communication with radio unit
L4 - Signal level (0 to 5 bars)
L5 - Flashes Z-Wave state or errors, if any
Powersave mode
The module just powered up, AC power is down, or AC power was recently restored and the battery is recharging. The module is fully functional and goes into Connected mode as soon as a signal needs to be sent.
Press and hold the [5] key for 2 seconds to switch the module into Idle mode and update the signal level reading. The system goes into Idle mode every 2 hours to check for any incoming messages.
L1 - Inactive
L2 - Communication with panel
L3 - Same flashing pattern as L2
L4 - Inactive
L5 - Inactive
Connected mode
The module is currently talking to Alarm.com. The module stays in Connected mode for at least four minutes after reporting an event to Alarm.com, unless the 5 Key is pressed and held for 10 seconds, which causes the module to go back to Idle mode.
L1 - Flashes general or cellular errors, if any
L2 - Flashes broadband errors, if any; Communication with panel
L3 - Communication with Alarm.com
L4 - Alternates two seconds on, then two seconds off
L5 - Flashes Z-Wave state or errors, if any
Sleep mode
The panel is not connected to AC power, or there is an AC power failure, and the battery level is low. The module will connect to Alarm.com to send a signal, but will otherwise draw almost no power.
