Home » Safety News: The SafeWise Blog

What Is a Security System Key Fob and How Does it Work?

Senior Staff Writer, Safety & Security

March 31, 2022

A security key fob is a wireless remote control device nearly identical to those clickers you get with your car. In fact, they perform basically the same function.

Step up your safety with our weekly newsletter

Sign up to get tips on how protect everything (and everyone) in your home, whether it's preventing accidents, preparing for a natural disaster or responding to an emergency.

By signing up, you agree to our Terms and Conditions and Privacy Policy.

What do security key fobs do?

Image: SafeWise

The wireless remote for your car locks and unlocks the car doors and initializes the built-in security system. It also includes a panic button that blares the horn and flashes the headlights and taillights.

The wireless remote, or key fob, for your home security system arms and disarms the security system in your home. It also includes a panic button that sounds an alarm, which in turn causes the monitoring center to be notified that a security breach or other home emergency is in progress.

Uses for security system key fobs

But they’re not just for when you exit and enter your home. Seconds count in emergency situations, and having a wireless key fob nearby while you’re inside your home can make a big difference for you and your family.

Placing your wireless remote on your nightstand allows you to arm the security system when you go to bed each night, ensuring your family and house are being protected while everyone sleeps.

For those with mobility or health issues, keeping a fob in your pocket can ensure you get help during an emergency situation (like after a fall) no matter where you are in your home.

How many security key fobs do I need?

Most home security systems allow for multiple fobs to be programmed into the system (up to eight in many instances). Why would you need so many?

In addition to being able to keep them in handy places around your home, you’ll be able to provide them to certain individuals that need access to your home. This includes older children, an elderly family member, or a trusted neighbor. No more divulging the passcode for your system.

How to order a new home security key fob

Image: Cove

With many of the larger security companies, like Abode and Cove, you just need to order a new key fob using the company's online store. For others, like ADT and Vivint, you'll need to make a call to customer service.

Replacing an old fob?

Before you order make sure to check with customer service to see if your old key fob is still covered by a warranty.

How to program a home security key fob

Each brand of key fob is activated differently. Your best bet is to go into to the security system's app, tap on the "add a new device" option, and follow the on-screen instructions.

Related pages on SafeWise

Compare the best home security systems

Brand	Best for	Lowest monitoring price	Starter equipment price	Contract required	Installation	Smart home compatibility	Learn more	Read review
Vivint	Best overall	$29.99/mo.	$599.00	No *	Pro	Amazon, Google, Z-Wave	View Packages	Read review
Frontpoint	High-end DIY pick	$34.99/mo.	$129.00	No	DIY	Amazon, Google, Z-Wave	View Packages	Read review
SimpliSafe	Reader favorite	$17.99/mo.	$245.00	No	DIY	Amazon, Google	View Packages	Read review
Cove	Best customer experience	$14.99/mo.	Quote required	No *	DIY	Amazon, Google	View Packages	Read review
ADT	Most experienced	$27.99/mo.	$0.00	Yes	Pro	Amazon, Google, Z-Wave	View Packages	Read review

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. Safewise.com utilizes paid Amazon links.

Certain content that appears on this site comes from Amazon. This content is provided “as is” and is subject to change or removal at any time.

†Google, Google Nest Secure, Google Home, Google Nest Protect, and other related marks are trademarks of Google LLC.

Written by

Alina Bradford

Alina has been reviewing the latest tech for more than a decade and has contributed her insights to CNET, CBS, Digital Trends, MTV, Top Ten Reviews, and many others. She specializes in smart home and security technology, working to make gadgets less mystifying one article at a time. In the early 2000s, Alina worked as a volunteer firefighter, earning her first responder certification. Her activities aren’t nearly as dangerous today. Her hobbies include fixing up her 100-year-old house, doing artsy stuff, and going to the lake with her family.