Alarm.com Universal Communicator (AUC) - Module LED Guide

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Alarm.com Universal Communicators (AUC) include 4 LEDs that indicate communication errors, panel communication, network communication, and signal strength.

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LED Pattern	Description
	The green OK LED indicates the following three key states: Cellular network registration: Once the device is powered ON, the OK LED (green) will blink rapidly and continuously during the cellular registration. Signal strength: After registration, the OK LED (green) constantly displays signal strength by flashing the number of times corresponding to the cellular signal strength. Then, it will remain ON or OFF for two seconds and repeat the pattern. Signal strength is represented by a scale of 0 to 8 flashes. Server connection: During the two-second intervals, the OK LED will indicate if the communicator has established an active session with the server. OK LED is ON for two seconds indicates the communicator is connected to the server. OK LED is OFF for two seconds indicates the communicator is unable to connect to the server.
	Receiving data from the control panel via DTMF: While sending data from the control panel to the communicator via DTMF, the DTMF LED (yellow) will flash the dialing and the Status LED (blue) will flash as confirmation of the handshake. DTMF indicates the AUC detects activity from the panel.
	Sim Card Error: In case of SIM card errors, the ERROR LED (red) and OK LED (green) will flash together.
	System Failure: Errors may occur during device operation or installation. An error is indicated by a solid ERROR LED (red). In most cases it means a communication problem with the modem or SIM card.
	Backup Channel: When the Dual-Path functionality is enabled on the device (EPX400-AUC only), the backup channel operation status is indicated by a solid DTMF LED (yellow).