Frequently asked questions
Which smoke alarms are compatible with each base?
FAQ000283808
22 September 2026
The Current Fire Tek® mains-powered alarms are designed to be retrofit-compatible with legacy mains-powered mounting bases, helping for quick upgrades in most applications without replacing the existing base.
Retrofit Compatibility – current alarms fitting the existing legacy bases:
Reverse compatibility: the current Fire Tek® mounting bases also accept compatible legacy alarm heads, as above. However, functionality may vary depending on the alarm model. For best results, we recommend replacing alarms with the most current equivalent model.
Accessory Base Compatibility: Additional accessory bases are available separately and can replace the standard base of mains-powered surface-mount alarms when extra functionality is required.
Alarms that are NOT compatible with accessory bases – 755PFM4, 755LPSMA4