Smoke-CO detector "Device Replacement Needed" while device seems to be operating?


I’m seeing the following. Is this an issue on my side? If so what should I do?


After the seemingly successful installation of a smoke-CO detector to, I see “Device Replacement Needed” red letters on both smoke and CO sensors on

I do see battery status. I have not tested activating the smoke/CO detection (during the installation, it did beep at the right time).


I’ve not seen that message myself, but it almost sounds like it is an indicator that the Smoke-CO detector needs replacing. How old is it, or is there an expiration date on it? I believe one is supposed to replace those detectors around every 10(?) years or so.

Thx for a quick reply. As I’ve updated my OP, I bought the device anew 2 months ago on (manufacturer’s note reads replace every 7-year).