Business Security Systems 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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Is there a Peripheral Keypad for the DSC Impassa?
DSC offers the WT5500 and the WTK5504 keypads for the Impassa. Up to four total keypads can be enrolled with a single DSC Impassa. Learn more about the Impassa and its keypads.
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How Do I Program a DSC WS4949 Key Fob to a DSC Impassa?
A WS4949 key fob is enrolled with a DSC Impassa by activating its wireless enrollment mode and then holding a button on the device for three seconds. Learn how to enroll a WS4949.
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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/ 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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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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