Can you mix brands of hardwired smoke detectors?

Asked By: Luxi Weylandt | Last Updated: 15th April, 2020
Category: home and garden smart home
4.2/5 (241 Views . 10 Votes)
In general, you will be better off using the same make and model for all units. and units that are supposed to be compatible will work together. Other units may or may not work together, or may mix up a smoke alarm versus a carbon monoxide alarm, so don't mix them!

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Likewise, can different brands of smoke detectors be interconnected?

You cannot interconnect different makes of alarm, they have different signalling. Buy one of the same make and don't mess around. Smoke alarms provide a degree of safety - only fit and use them in accordance with the maker's instructions.

Also Know, how do hardwired smoke detectors communicate? The electrician runs the red wire from alarm to alarm to interconnect them. When any alarm detects a fire, it sends a 9-volt signal on the red wire. Most alarms can handle about a dozen units intercommunicating on the same red wire. It's a very simple and a very effective system.

Thereof, are all hardwired smoke alarms the same?

Most hard-wired smoke detectors have a connection from the electrical wires to the smoke detectors that engages and disengages. It's like a plug. The key is knowing what connector your smoke detector has so that you buy a new smoke detector with the same connector.

How do hardwired smoke detectors work?

Hardwired simply means that the smoke alarms are physically attached to your home's electrical wiring. The term is used to distinguish this type of smoke alarm from the less expensive, more easily changed smoke alarms that adhere to the wall with double-sided tape or are attached with screws and that run on batteries.

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How much does it cost to install hardwired smoke detectors?

The average cost to have a smoke detector hardwired into your home is around $150. Yes, electricians install smoke alarms that are hardwired or interconnected.

Do you have to replace all smoke detectors at the same time?

Experts recommend replacing all connected detectors at the same time, even if some are working. Smoke detectors are an essential part of a fire-prevention strategy, so you should replace yours as soon as possible.

Can I replace just one smoke detector?

If the smoke alarms in your house are 10 years old or more, it's time to replace them. To ensure that your new alarms will work together, buy alarms of a single brand and model and replace them all at the same time. You'll also need a non-contact voltage detector (Photo 1) and a wire stripper.

Are hardwired smoke detectors low voltage?


Low-voltage hardwired smoke detectors are designed to be connected to a home security system's control panel. Combined with fire alarm monitoring, this gives the best protection for both life and property. When low-voltage smoke detectors are added to a house, the 110-volt units should not be removed.

Does combo smoke CO detector work?

Yes, they are as reliable as standalone smoke and carbon monoxide detectors. Inside, there are two sensors, one for smoke and one for carbon monoxide. The most common type of smoke detection sensor is ionization, which uses a reaction with Americium-241 (A radioactive material).

Do hardwired smoke detectors need to be replaced?

Pros recommend changing hard-wired smoke alarms after 10 years. Dear Michael: Your alarms are overdue for replacement, according to the National Fire Protection Association, which recommends that you replace a detector when it's 10 years old.

Do hardwired smoke detectors go bad?

Hardwired Alarms
Although this type of smoke alarm may seem more permanent, it is equally necessary to replace them at regular intervals. Replace the unit's backup battery every year, and replace the entire device every 8 to 10 years.

Why do my hardwired smoke detectors keep going off?

Electrical Power Surges
A change in the electrical current to the wired smoke alarm will cause the smoke alarm sound to go off when there is not smoke in the air. A loose wire in the smoke detector can also cause it to go off as the electrical current is cut off and then restored to the alarm.

Can you unplug a hard wired smoke detector?


If there are connecting wires, it is a hard-wired unit and the wires can be disconnected. Dismount from the ladder and flip the circuit breaker switch that controls the smoke detector. If there is no obvious marking on the panel that designates a switch for the detector, throw the main breaker to the "Off" position.

Why is my hardwired smoke detector beeping?

Most hard-wired smoke detectors include a 9-volt backup battery that's supposed to kick in if your home loses electricity. If that battery is running low, your detector alerts you with a high-pitched beep. Turn off power to your wired smoke detector at the circuit box. Find the battery cover panel on the detector.

Will hardwired smoke detectors work without battery?

Smoke Alarm Power Sources
Without the battery, neither of these units have the power to go off. Hardwired alarms often have a battery backup just in case the electrical power goes out. If you take the battery out of one of these units and your power goes out, the alarm will fail to sound and warn you of the danger.

Do you really need to replace smoke detectors every 10 years?

Smoke alarm lifespans can vary, but according to the association, smoke alarms need to be replaced at least every 10 years. According to Carli, that lack of awareness means some U.S. homes may have smoke alarms that have passed their expiration dates, putting people at increased risk in the event of a home fire.

What do you do with old smoke detectors?


When it comes to disposal, old photoelectric detectors can be safely put in the trash, so long as you remove the battery first. Read on for information about ionization detectors. Ionization-Based Smoke Detectors: Ionization detectors contain a small amount of Americium 241, a radioactive isotope.

How do you silence an interconnected smoke detector?

For hardwired or wireless alarms, only hushing the initiating unit will silence all other interconnected alarms (see below on how to find the initiating unit). The smoke alarm is desensitized by pushing the “Test/Hush” button on the smoke alarm cover. If the smoke is not too dense, the alarm will silence immediately.

Do hardwired smoke detectors talk to each other?

Interconnectability. Battery-powered smoke detectors are stand-alone appliances and will not chain together. With hardwired smoke detectors, they can be connected together so that if one goes off, they all are triggered.