Real protection starts with real response. We monitor your existing alarm 24/7.

You already understand the importance of home security – you invested in a system. We know you want to feel safe and protect your property, and if you have an existing alarm system, you shouldn’t have to start from scratch. That’s why we specialize in breathing new life into your current security setup, providing local, reliable, professional monitoring without the expense of a complete replacement. Let your existing investment finally go to work for you with Greynell Security. Our alarm systems are professionally monitored right here in North Carolina. We will treat you with care, empathy and professionalism if you ever need us.
We have over 40 years of experience in the home security and smart home field. You can trust us to be a voice on the other end of the line in the event of an emergency.
As a local, family-owned business with offices right here in Asheboro and Greensboro, NC, Greynell Security offers the peace of mind that comes with knowing your home is protected by people in your community. We’re not a distant call center; we’re your neighbors, ready to provide prompt and personal monitoring services tailored to your existing security system. Activate the full potential of your current alarm with trusted, local protection from Greynell Security.


Your home, pets and loved ones are protected 24/7 by professionals right here in North Carolina. Let’s reduce your anxiety and feel safer and more secure, whether you’re home or away.

A monitored smoke detector will alert the Fire Department even if your pets are home alone.

The visible presence of a monitored security system as well as swift response from authorities can act as a significant deterrent to potential burglars, making your home a less appealing target.

Check on your home remotely via our smartphone app, view live camera feeds, arm or disarm your system, and receive alerts, to give you control and connection even when you’re away.

Many insurance companies offer discounts to homeowners with monitored security systems, recognizing the reduced risk of loss. This can lead to long-term cost savings.

We can include medical alert buttons or pendants, providing a crucial lifeline for elderly or vulnerable individuals in case of a fall or other medical emergency.

We’ll have a quick phone conversation. We’ll ask a few questions about your existing system. From there, we’ll decide if we need to come take a look at your existing equipment. We might even ask for a couple of photos of your equipment. If we need to come visit, we’ll schedule a day and time.

We’ll come to your home, activate your system, add or replace any components needed and walk you through the use of your keypad and mobile app.

Enjoy knowing you leveraged your existing equipment and your home is now protected. Emergency services are ready and listening should you need help.

“This has been a great experience from camera install to all of our follow up questions. Highly suggest.”

“Keith did an amazing job installing and setting up my new security cameras! He walked me through how to keep my home secure and everything runs smoothly!”

“I’m consistently impressed with Keith at Greynell LLC. Keith goes above and beyond to solve technical issues and find up to date solutions for the company. We’re located in a rural area which makes it challenging. I highly recommend Greynell LLC.”


Our alarm systems are professionally monitored right here in North Carolina. We will treat you with care, empathy and professionalism if you ever need us. Our monitoring team has been at it since 1963. You can trust us to be a voice on the other end of the line in the event of an emergency. Alarm signals from your system will be dispatched quickly and efficiently.
Well, there’s a story behind that. The answer is right here.
No. No landline phone line is required. As a matter of fact, we encourage you to monitor your system using a cellular module. Your system will be monitored via the cell phone network. This doesn’t affect your cell phones or anything with your cell phone plan.
Honestly, it varies and depends on a lot of factors. Often, we can keep and use all your existing equipment and simply connect you to our local monitoring. Sometimes we’ll need to replace some small components and the cost is minimal. In some cases, customers want to keep their system and expand the functionality.
Absolutely! Many people with security systems only use their landline phone for their alarm system. We can convert your existing alarm to cellular. This may remove the need for a landline phone in your home.
Yes! Not only do we provide smoke detection, you smoke detectors will be monitored as part of your system. If smoke is detected, the fire department will be notified. This protects your pets and property when you’re home and away.
Yes. Gone are the days where your pets will ‘set off’ the motion sensor. Today’s modern motion sensors are pet immune.
Ensure your property is always under a watchful eye with our expert security camera installations. Whether you need the unwavering reliability of wired cameras, the flexible placement of wireless options, or the ultimate convenience of solar-powered cameras that require no wiring, we have the perfect solution for your home or business. Our team custom designs every setup to give you clear visibility and peace of mind, day and night.
We’re proud to serve Central North Carolina and beyond! Our in house technicians will install and service your alarm system. We’ll walk you through the use of the system and how to contact emergency services should you need them. Controlling your system is as simple as pressing a button. Whether you’re on our Slimline touchpad or on your mobile phone, you’ll find the same easy to understand icons.
If you have questions before or after the install, just give us a call! There’s a good chance you’ll speak to someone that installed your system! No phone menus to navigate. Just personal service from a company that cares. Call anytime at 336.328.4550!
Our alarm systems are simple to use and designed to fit your needs. Not everyone’s home fits into a ‘package’ of equipment. Everyone’s security needs are different. We’ll design a simple, effective system that correctly secures your home or business.
The short answer is no, there doesn’t have to be. We understand many people don’t like the idea of us coming in and drilling holes for sensors and keypads. We have lots of options for mounting and keypad location.
Just select a day and time that works for you and we’ll give you a call!
We’ll be in touch as soon as possible.