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The Daily Insight

What does the trouble light mean on a security system?

Author

Matthew Barrera

Published Feb 20, 2026

What does the trouble light mean on a security system?

The trouble light is an indication that something is not functioning properly on your DSC security system. When a trouble is present the system trouble indicator light will illuminate and the keypad will beep every 10 seconds. To silence the trouble beep simply press the # key on the keypad.

What does trouble mean on house alarm?

A trouble signal (sometimes indicated in the alarm history by the abbreviation TR) indicates a possible problem or difficulty with your security system, such as a loose wire, a poorly aligned sensor or a low battery status.

How do I turn off the trouble light on my ADT alarm?

To find out what the problem is, you can simply press *2 on your keypad. After pressing this on the keypad, your zone lights should light up, communicating any trouble areas. Pushing # will silence the trouble sound.

What does a trouble light on a security system mean?

Blinking or illuminated trouble lights on a security system can mean many things. Generally speaking, it is telling you that something is “wrong” with your security system. In some cases, you’ll be able to fix the problem yourself.

Why does my home alarm keep flashing trouble light?

The trouble light may also flash if the time and date need to be reset or there is low battery power in the keypad. Sometimes the customer can check for problems and reset the system themselves, but some issues require calling the alarm company’s customer service department for advice.

What to do if your home security system is having trouble?

Reset power; all should go back to normal (unless the transformer for the system went bad – If that happened, you’ll need a service call.) Traditional “land line” systems are always looking for dial tone to control panel. If the house phone is dead this trouble condition will exist.

How to tell if your DSC alarm system is in trouble?

Many people call and state that they have a trouble light or a triangle lit up on their keypad. If either of those are lit up, then your system is letting you know that something isn’t right. Here is an easy way to tell what the trouble may be. On your DSC Keypad, hit ” * 2 ” Zone light will turn on showing trouble

Blinking or illuminated trouble lights on a security system can mean many things. Generally speaking, it is telling you that something is “wrong” with your security system. In some cases, you’ll be able to fix the problem yourself.

The trouble light may also flash if the time and date need to be reset or there is low battery power in the keypad. Sometimes the customer can check for problems and reset the system themselves, but some issues require calling the alarm company’s customer service department for advice.

Many people call and state that they have a trouble light or a triangle lit up on their keypad. If either of those are lit up, then your system is letting you know that something isn’t right. Here is an easy way to tell what the trouble may be. On your DSC Keypad, hit ” * 2 ” Zone light will turn on showing trouble

Reset power; all should go back to normal (unless the transformer for the system went bad – If that happened, you’ll need a service call.) Traditional “land line” systems are always looking for dial tone to control panel. If the house phone is dead this trouble condition will exist.