DSC SCW457AVZNT Frequently Asked Questions

Will a DSC Impassa Work w/ a Phone Line?
By default, a DSC Impassa is designed to work with a phone line. But we recommend upgrading to cellular on the system to improve reliability. Learn more about the DSC Impassa.
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How Do I Add a Key Fob to a DSC Impassa?
A key fob can be added to a DSC Impassa by putting the system in its wireless enrollment mode and then holding a button on the keyfob for three seconds. Learn how to add a key fob.
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How Do I Get Power to a DSC Impassa?
A DSC Impassa receives power from a plug-in AC transformer and a backup battery. A 2-conductor wire connects the transformer and the panel. Learn how to power a DSC Impassa.
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How Many Wireless Zones Are On a DSC Impassa?
The DSC Impassa provides support for 64 wireless zones. The system is designed to work with legacy DSC 433 MHz Sensors. Learn more about the DSC Impassa Alarm System.
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Will a DSC Impassa Work w/ Apple HomeKit?
A DSC Impassa cannot be set up to work with Apple Homekit. Apple has not made HomeKit compatible with Alarm.com. Learn more about the DSC Impassa and Apple Homekit.
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Will a DSC Impassa Work w/o a Phone Line?
If a DSC Impassa has an active cellular connection, it can receive monitoring service without a phone line. Find out how to provide monitoring for a DSC Impassa System.
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What Happens to a DSC Impassa When the Internet Goes Down?
An internet outage will not affect a DSC Impassa. The system can only use a cellular connection or a phone line connection. Learn more about the DSC Impassa Alarm System.
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How Do I Add an External Keypad to a DSC Impassa?
A keypad can be added to an Impassa by activating the keypad's enrollment function while the panel is in its wireless enrollment mode Learn how to add a keypad to an Impassa.
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Can I Set Up WIFI as Primary & GSM as backup on a DSC Impassa?
The DSC Impassa cannot use WIFI, but it can use cellular. This is fine, as cellular service is both plenty fast and reliable. Learn more about cellular monitoring for the Impassa.
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Is the DSC Impassa Compatible w/ Alarm.com?
The DSC Impassa will work with Alarm.com if a cellular communicator is installed with the system. The user will also need a cellular monitoring plan. Learn more about Alarm.com.
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