A monitored home security system is one of the best investments you can make in keeping your household safe. However, it’s only as strong as its individual components. As a homeowner, one simple way you can keep your home and family secure is by replacing batteries in some key pieces of equipment around the house.


Smoke Detector

Smoke detectors saves lives. The National Fire Prevention Association has reported that 21% of home fire deaths happen in homes without working smoke detectors. Even worse, dead batteries are responsible for 25% of smoke alarm failures.


According to the Consumer Product Safety Commission, about two-thirds of home fire deaths occur in homes with no smoke alarms or no working smoke alarms.

Smoke detectors are a front line of defense for your house. That’s why it’s vital to test alarms monthly and replace the batteries yearly.

Here’s how you can change your batteries:

  • Gently open the alarm cover.
  • Remove the old battery.
  • Replace it with a brand new 9-volt lithium battery.
  • Replace the cover.
  • Test the alarm.

Door and Window Sensors

These sensors may be small, but they do a lot for your home security. By signaling to your security system every time a door or window is opened, they let you keep track of who is coming and going. They can also trigger an alarm when you aren’t at home.

These wireless sensors have a five year battery life. Is it time for a replacement? Have you noticed on your security system touchscreen that a sensor is running low? Here’s how you can change the batteries in your sensors:

  • Disarm your system
  • Open the sensor. It may have a screw or a small tab at one end that needs to be pressed in.
  • Replace the batteries. You may need two AAA batteries or a few CR2032s.
  • Close the cover.
  • Test the system.

Your Keychain

Are you ready in the case of a natural disaster or power outage? If you’ve followed our guide to creating an emergency preparedness plan, you’re ahead of the game. However, don’t neglect replacing the batteries in your keychain.

This is especially important if you have a keyless ignition. In a crisis, you may need to leave quickly and don’t want to be fumbling with the car at that time.

Key fob batteries usually last around 3-4 years, but if you notice reduced range or problems with its functioning, it’s definitely time for a replacement. So, what battery will you need? It varies. The back of your car fob may have the battery type written on it. Otherwise, you’ll need to look it up in the owner’s manual.

For some vehicles, key fob battery replacement is straightforward:

  • Open the cover. You may need to unscrew it, press down a tab, or press a flathead screwdriver into a recessed notch to open it up.
  • Swap the batteries out.
  • Replace the cover.
  • Test to make sure it still works.

Unfortunately, some cars (especially new or high-end vehicles) require you to go to a dealership and let them handle this job. This will be stated in the owner’s manual.

Any Questions?

When in doubt, call the experts. Do you have questions about battery replacement in your system or want to learn more about Protect America’s monitored home security? Contact us at 1-888-951-5136 or online to get a free quote.