Your old alarm still beeps, but does it still call anyone? Signs it needs replacing

The question that matters more than age

An older alarm system needs attention when it can no longer reliably reach the monitoring center, when it depends on a landline you no longer have or a cellular network that has been shut down, when sensors and keypads keep failing, or when you have no idea who monitors it. Age alone is not the test. The test is whether a signal from your house actually reaches someone who will respond, and whether the system fits how you live now.

We at Foresight Security see this question most often from people who just bought a house with a keypad already on the wall, and from longtime customers of other companies whose system has started acting up. The good news is that you can figure out most of it yourself before calling anyone. You do not need tools or technical knowledge, just the keypad, a phone and twenty minutes.

Signs your system may have gone quiet

The most dangerous failure is the one you cannot hear. A siren that still sounds when a door opens tells you the panel works locally. It tells you nothing about whether the panel can still call out. Older systems were often built to communicate over a landline or an early cellular radio, and both of those paths have been disappearing.

The National Council on Aging warned during the major carriers' 3G shutdowns that many older home alarm systems and medical alert devices would stop working, and that for alarm systems a lack of compatibility could mean a failure to contact the system monitors. Many households never noticed, because the keypad looked and sounded exactly the same.

• You canceled your landline, and the alarm used to depend on it
• The panel has a cellular communicator that has not been replaced in many years
• The keypad shows a communication, trouble or failure-to-communicate message
• You have not received a monthly statement or call from a monitoring company in a long time
• Nobody has called you after a real alarm or an accidental trip

Physical signs of a tired system

Some signs are obvious. Keypads with worn buttons or dim screens, a constant low-battery chirp that returns no matter how many times you change batteries, sensors that report a door open when it is closed, and false alarms that keep happening for no clear reason all point to equipment near the end of its life. Wired sensors can fail where the wire meets the contact, and older wireless sensors can lose range or eat batteries.

Look at the cameras too, if you have them. Grainy images, a recorder that shows full or has stopped recording, cameras that need a separate app nobody remembers the password to, and night images that show nothing useful are all reasons to look at newer equipment. Video that cannot identify a face or a license plate is not doing much.

Finally, notice how the household treats the system. If nobody arms it because the keypad is confusing, the codes are unknown or it false alarms too often, it is not protecting anything, however new it is. A system that people actually use every day beats a more capable one that sits disarmed, and that habit is often the clearest sign the setup no longer fits the house.

Life safety devices have their own clock

Smoke and carbon monoxide detectors are not permanent. The CDC recommends replacing carbon monoxide detectors according to the manufacturer's instructions or every five years, and checking the batteries when you change your clocks each spring and fall. Most detectors print a manufacture date on the back. If yours are older than that, or the date has rubbed off, treat them as due.

If those detectors are wired into a monitored system, replacing them is also a chance to confirm that a smoke or carbon monoxide alarm actually sends a signal to the central station, so the fire department or emergency personnel can be sent when nobody is home to hear it.

The system came with the house

Inherited systems are their own category. You may not know the master code, the installer code, the monitoring company or whether the account was ever closed. The previous owner may still get alerts. The panel may be locked to a company you have never dealt with.

Start by looking for a sticker or brand name on the keypad or inside the panel box, which is often in a closet, the garage or the primary bedroom. Call that company and ask whether the account is active and whether it can be transferred to you. If it cannot, or you do not want that company, a new company can evaluate whether any of the existing equipment can be used. Either way, change every code. You do not know how many people the last owner shared them with.

A simple test you can run this week

If you have an active monitoring account, you can check whether signals are getting through. Call the monitoring company first and ask them to place your account in test mode, so nobody is dispatched. Then open each protected door and window, walk past each motion detector and press the test button on detectors that have one. Call back and ask which signals they received. Anything they did not receive is a problem.

If you do not have an account, or you cannot reach anyone, that is your answer: the system is a local noisemaker. That may still scare off a casual intruder, but nobody will be sent. Our guide to what happens when a monitored alarm goes off explains what you are missing.

• Call the monitoring company and request test mode
• Trip each door, window and motion zone one at a time
• Press the test button on smoke and carbon monoxide detectors
• Ask the operator which signals arrived
• Take the account off test mode when you are done

Older business systems fail in different ways

For a shop, office or restaurant, the warning signs are less about beeping and more about blind spots. If you cannot tell who opened the building this morning, if every employee shares one code, if former employees may still know that code, or if the system relies on whoever closes remembering to arm it, the system is behind what small businesses can get now. Newer business systems send open and close alerts, keep a record of each user, can auto-arm if the last person forgets, and can alert you when someone enters a sensitive area such as an office.

Cameras age faster in a business than in a house, because they run every hour of every day. A recorder that has quietly stopped saving footage is something many owners discover only when they need a clip after an incident. If your business is in the Dallas area and you have not pulled a recording in months, pull one this week and see whether it shows what you would need.

Upgrade the parts or start fresh?

Not every older system has to come off the wall. Depending on the equipment, it can sometimes make sense to keep existing wired sensors and replace the panel, communicator or keypad. Other times the panel is so old, or the sensors so unreliable, that starting fresh costs less over the next several years than repairing pieces of it. The only way to know is for someone to look at what is actually installed.

When we evaluate an older system, we look at how it communicates, what condition the sensors and wiring are in, whether the keypad and panel can work with a modern app, and what the household wants now that it did not need when the system was installed. Modern systems add things older ones rarely had: control from a phone, an individual code for each person with a record of who armed and disarmed, cellular communication that keeps reporting during a power outage, camera views on the keypad and smart locks on the same app.

Do not let a door knocker decide for you

Older systems attract salespeople. Someone may knock and say your company went out of business or that your system needs an urgent upgrade. Before you let anyone touch your panel, call your current company yourself, using the number on your bill or keypad. If you do decide to change, compare at least two written quotes and read the monitoring terms carefully. Our guide to questions to ask before signing with an alarm company covers what to look for.

The FTC has warned about exactly this pattern in home security sales: claims that your company is out of business, phony upgrades and pressure to sign before you have time to think. A legitimate company will leave written information and give you time to check it. If someone will not, that alone tells you enough.

Getting an older system checked

If you are not sure what you have, call us. We visit homes and businesses across the Dallas-Fort Worth area, look at the panel, the sensors, the cameras and how the system communicates, and tell you plainly whether it can be kept, upgraded or should be replaced. If a new system makes sense, you get a written quote with equipment, installation and monitoring spelled out.

If you go ahead, our licensed technicians install it, test every zone with the monitoring center and train everyone in the house on the app and keypad. If your homeowners insurer asked about your alarm, this is also a good time to sort out the paperwork; our guide on monitored alarms and homeowners insurance explains what insurers usually want to see.

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