Our affordable burglar alarm monitoring and fire alarm monitoring and exceptional customer service sets us apart from other security providers. We offer complete security solutions to protect your home or business from modern security threats. By choosing Shearer Security Devices you will receive the best service in the industry. Our custom tailored fire alarm systems, burglar alarm systems and surveillance systems are designed to meet your specific security requirements.

Contact Details

  City Harrisburg , PA
  Zip Code 17111
  Address 5450 Derry Street
  Phone Number (717) 564-2230

Products & Services

Fire and Burglar Alarm Systems, Video Surveillance, and Access Control

Fire and Burglar Alarm Systems, Video Surveillance, and Access Control

Residential and Commercial Fire and Burglar Alarm Systems Installed and Maintained, Access Control Systems and Video Surveillance Cameras. Shearer Security has been voted the Best in Harrisburg for the last 9 years. Showroom and service facilities conveniently located at 5450 Derry Street, Harrisburg, PA for fast professional service and economical rates. Call 1-866-Shearer (1-866-743-2434) or (717) 564-2230.

Customer Testimonials

Shearer is a great company! We updated and purchased our security system from Shearer. From the initial visit through the installation, Mr.Shearer, Steve, and another gentleman were, kind and very knowledgeable and professional. Our older home presented some issues with the transmission of the signals between floors. The service tech, Louis, came the day the problem surfaced. He worked tirelessly for almost 3 hours until the system was working flawlessly again. No charge since it was still under warranty! We have had 3 other security systems over the past 21 years. Wish we'd have started with Shearer!

Fist class service from the start.
From educating us as to what system is best for us to the well organized, friendly install technician.
Thank you!!!

Every time I have needed Shearer Security they have been there as quickly as humanly possible. They have opened numerous car & truck doors for us. I have keys made at their facility. They change locks on almost everything. They offer safety supplies and self defense supplies. You can never have too many TASERS!!! They come in all shapes and sizes. PLUS they offer security systems for every budget! I can actually see how many buttons people have on their shirts if I want to. I love this honest family owned and operated business. Thank you for keeping many families and businesses more secure in our community!!!

My business used Shearer Security for ten plus years and i highly recommend them, both for my office security system and for safes that I purchased there. Very nice people to work with and dependable too!

Out front door lock broke at night when we needed to get our baby in bed. The guy came very quickly, got us in really fast and fixed the lock right away. Very professional, very nice and very reasonably priced.

They extremely courteous and professional. They did the job asked in no more than ten minutes. Was very pleased and will recommend to anyone that needs key work or security for residential or professional reasons.

Called up Shearers because we lost the keys to our roof carrier. Told us to come right down and after 3 attempts and hand milling the key, Tyler got it open!! Saved the day as we are leaving in less than 24 hours. Thank you, Thank you!! Great service, great patience and a very reasonable price! Will highly recommend!!!

Had a problem with our front door, not an alarm issue- which caused issues with entering. Tech came out, rush hour on a weekend evening and got us fixed up quickly. Can't say enough about the professional service we received!


Shearer Security Devices Harrisburg - Amazing 5 Star Review by Susanne M

Shearer Security Devices in Harrisburg Pennsylvania - Customer Review by Susanne M.

Photo Book

Social Activity

Here are our safe moving technicians at it again. Another successful safe delivery.
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Watch our auto tech decode a worn high security key and cut a new one to factory specifications on our new state-of-the-art machine. stay tuned for more videos on what this machine can do. Call us for your lost and or worn high security car keys. 717-564-2230
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Social Media Safety Tips 1. As much as you may love to share your exciting upcoming trip, you might want to postpone your posts until you return. You are allowing people to know you will not be home, and your valuables are unprotected. 2. Oh how we love
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Need to purchase a safe? Come visit our showroom on Derry Street. We can help you choose the right safe for your valuables. Not only do we sell safes but we also deliver them.
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We're hiring! Apply now.
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How safe is your home from invasion by criminals? Do you feel secure when you are home alone? Is it as safe as it can be? Have your taken the necessary preventative or safety countermeasures to insure the safety of your house and family? Take the quiz
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