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Why is my security system showing an Expander Module DC Loss notification?

My System | Troubleshooting

An Expander Module DC Loss notification indicates that an expander module for your system has lost power. Expander modules can be keypads, zone expanders, or cellular communicators. This can be caused by a power outage or a wiring issue. If you are experiencing a power outage, once the power restores, the expander module should receive power again. This could also indicate a wiring problem or an issue with the expander module.

If you need assistance, please call 1.800.PROTECT (1.800.776.8328) and we will be happy to help.

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