Ever since I moved into my house a few years ago this thing blinks either red or yellow at night. I can’t tell what it’s for. It’s connected to some wiring in my attic. Any ideas?

If you’ve seen a small box on the outside of your house flashing red or yellow at night, you’ve found a DSC (Digital Security Controls) alarm status module. This item is part of a security system commonly installed in homes. It can be used to send visual signals to indicate your alarm’s status throughout your home.

What is the Function of the DSC Alarm Status Module?

The “alarm status” part of a DSC alarm status module is a pilot light that connects wired into the control panel of your security system within your home. Its main purpose is to serve as a visual indicator. It informs homeowners, neighbors, or anyone passing by what mode the system is in.

Here is what the colors typically represent: