Can you mix and match smoke alarms?

Author: Pink Douglas  |  Last update: Monday, December 1, 2025

All modern hardwired First Alert, Onelink, and BRK alarms use the same wiring technology, and can interconnect. It's also safe to mix and match several types of hardwired detector, like a photoelectric smoke alarm near the kitchen and a heat detector near the garage.

Can you mix different brand smoke detectors?

You cannot mix and match alarms from different manufacturers or different models of alarms from the same manufacturer. So just match the wiring at all the new alarms.

Do all smoke detectors need to be the same brand?

When interconnected smoke alarms are installed, it is important that all the alarms are from the same manufacturer or are listed as compatible (see manufacturer's instructions for compatible alarms). If the alarms are not compatible, they may not sound.

Can you mix Kidde and First Alert smoke detectors?

Mixing Kidde and First Alert smoke detectors is generally not recommended. While both brands produce reliable smoke detectors, they may use different technologies, signaling methods, and compatibility standards. Here are a few key points to consider:

Do all smoke detectors work together?

Battery-powered smoke detectors are stand-alone units. But if you have AC-powered smoke detectors in your home and your home has been built in the last 10 years in the U.S., chances are they are wired together to intercommunicate.

"Pro-Tip...", Swapping Out Wired Smoke Alarms

What smoke detector do firemen recommend?

Since no one can predict what type of fire might start in their home, the U.S. Fire Administration recommends that every home and place where people sleep have: Both ionization AND photoelectric smoke alarms, OR. Dual-sensor smoke alarms, which contain both ionization and photoelectric smoke sensors.

Are Kidde and FireX compatible?

The Kiddie and FireX Alarm models listed have been tested and are interconnect compatible: 1235, 1275, 1276, 1285, i12020, i12040, i12060, i12080, i4618, PE120, PI2000, KN-COSM-IB, KN-COB-IC, KN-COP-IC, AND RF-SM-ACDC.

Are different smoke alarms compatible?

All modern hardwired First Alert, Onelink, and BRK alarms use the same wiring technology, and can interconnect. It's also safe to mix and match several types of hardwired detector, like a photoelectric smoke alarm near the kitchen and a heat detector near the garage.

Which brand is better, Kidde or First Alert?

Overall, we recommend the First Alert SA3210 because it combines photoelectric and ionization sensors that detect low and smoky fires as well as high flames. It's also battery-operated, so it's easy to install. If you're looking for a bargain, the Kidde I9030 is a basic smoke detector that does the job at low cost.

How to sync smoke detectors?

How to pair multiple smoke alarms
  1. Prepare the detectors which you need to pair. Select one detector to go into “sending mode”. ...
  2. Press and hold the test button on the other. detectors for approximately 1 second, release. ...
  3. The “sending” & “learning” detectors will both. ...
  4. After completing the pairing process, press.

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

Test smoke alarms every month by pressing their test buttons. If your alarms use regular batteries, swap in fresh batteries at least once a year. A “chirping” sound means that it's time to change batteries. Because alarm sensors wear out, replace each alarm at least every 10 years.

Are Kidde and FireX the same company?

In 2009, Kidde Acquired the company FireX, which was owned by Invensys Controls.

Can you mix ionization and photoelectric smoke detectors?

If your existing detectors are ionization smoke alarms, you can purchase photoelectric smoke alarms and install one next to each ionization unit.

Are combination smoke alarms good?

Dual-sensor smoke detectors are recommended for most areas. If you find false alarms annoying, you may want to use a photoelectric smoke detector near your kitchen or bathroom, but choose a dual-sensor option for the rest of your home.

Can you replace a hardwired smoke detector with a battery operated one?

If your home was built after 1986, it will have at least one hard wired smoke alarm connected directly to your electrical panel. It is not acceptable to replace a hard wired alarm with one that is battery operated. A home must maintain at least the same level of protection as originally required.

Can you mix mains smoke alarms?

FireAngel's Pro Connected range is the only range that allows you to build a network of mains powered and battery powered devices, and have them interlinked so that: If one alarm detects danger the alert will be heard across all the alarms in the network.

Do First Alert and Kidde smoke detectors work together?

First Alert ADK-12 BRK/Kidde Smoke Alarm Adapter Plugs

The BRK ADK-12 Smoke Alarm Adapter Plug 12pk easily connects competitive alarms without rewiring. This product is compatible with BRK and Kidde Smoke Alarms and saves time and installation costs when retrofitting existing homes or apartments.

Which is better, smoke detector photoelectric or ionization?

Ionization sensing technology is generally more sensitive than photoelectric sensing technology at detecting small particles, which tend to be produced in greater amounts by flaming fires. These types of fires consume combustible materials rapidly and spread quickly.

Why do my First Alert smoke detectors keep beeping?

Low Battery or End-of-Life: This type of chirp indicates it is time to replace your smoke alarm's batteries or the smoke alarm itself.

Do I need an electrician to replace a smoke alarm?

To be installed correctly, hardwired smoke detectors require more than just the common sense needed to install battery-operated smoke detectors. To ensure they function seamlessly and avoid potential dangers, these units need to be replaced and installed by a licensed electrician.

How many smoke alarms do I need in a 3 bedroom house?

According to the United States Department of Homeland Security, and the California Building Code, at least one smoke detector needs to be placed in each of the following areas of your home: On Every Floor Level. In Every Bedroom. In Every Hallway Outside of a Bedroom.

Why does my hardwired smoke detector keep going off?

Several common causes can explain why your hard-wired smoke detector is beeping: Low battery: Even hard-wired smoke alarms have backup batteries that need replacing periodically. A low battery can cause that annoying beeping sound. Dust buildup: Dust and debris inside the smoke detector can trigger false alarms.

Can you mix smoke alarm brands?

You can mix and match hardwired First Alert, BRK, and Onelink models. All of our current models use the same wiring harness and connector. We do not recommend mixing different brands since we can only guarantee the performance of First Alert and BRK alarms.

What happened to Firex smoke detectors?

The manufacturer of Firex® branded products was acquired by Kidde in 2009. Invensys Controls no longer manufactures or supports these products.

What models of Kidde smoke detectors are being recalled?

The recalled units are Kidde Model Series 2040, 2050, 2060 and 2070 Smoke and Combination Smoke/Carbon Monoxide alarms. Only alarms with the TruSense logo or “AMBER=FAULT” printed on the front of the alarm are included in this recall. The model number is printed on the back of the alarm.

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