Yes, you can interconnect hardwired and wireless smoke detectors, but only with a dedicated bridge unit or a smart Wi-Fi system that supports this hybrid functionality. You cannot directly connect a standard hardwired alarm with a standard battery-powered wireless alarm; you must use a bridge device or a smart system, such as First Alert’s SC5 smart alarms, to create a “mesh network” via wireless protocols.
Anka Security shares two different connection methods:

Using a Bridge Unit

1. Identifying a Compatible Bridge:

Some manufacturers, such as First Alert, offer specific models (such as the SA520B) that act as a bridge between their hardwired systems and wirelessly interconnected alarms.

2. Installing the Bridge:

Install the bridge unit at the hardwired location in your existing system.

3. Adding a Wireless Alarm:

Add a compatible battery-powered wirelessly interconnected alarm to the system, linking it to the bridge unit.

4. Functionality:

When an alarm is triggered, the bridge unit receives the signal and forwards it to the hardwired system, ensuring that all alarms in the interconnected network sound.

Using a Smart Wi-Fi System

1. Choose a Smart System:

Look for smart smoke and CO alarms, such as the First Alert SC5 series, which are designed to create a mesh network using Wi-Fi or other wireless communication protocols.

2. Install and Register:

Install both hardwired and battery-powered versions of your smart alarm and register them with the manufacturer’s app (such as First Alert and the Google Home app).

3. Connect:

Once set up in the app, the alarms will communicate with each other wirelessly, creating a unified, connected system where an alarm in one location can trigger alarms in others.

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