---
title: Is the Honeywell SiXFOB Encrypted
description: Is the Honeywell SiXFOB Encrypted
---
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# Is the Honeywell SiXFOB Encrypted
Yes, the Honeywell SiXFOB is fully 128-bit AES encrypted communicating its wireless RF signals via the 2.4 GHz frequency back to the Honeywell Lyric Controller.
Once the SiXFOB has been programmed into the Honeywell Lyric controller it cannot be used with another controller until it has been deleted first due to the Lyric Lock features. Each Device has a unique MAC number located on the sticker on the device.
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