Update: if you came here looking for a fix to the annoying beep I might have one - if you are feeling handy: take the unit apart, desolder one wire from the battery terminal, discharge the capacitor (by touching the disconnected wire to the other wire) and solder it back on. Take care not to short the battery, you only want to discharge the circuit with the battery disconnected. If you do not understand perfectly what you need to do then please do not attempt this! This has 'fixed' one of my units (since 6 months) and has quitened another one for ~2 months. Back to the original post: On of the my smoke detectors - installed by the landlord under legal obligation - started acting up by emitting annoying short beeps and random intervals, moreso during the night. The producer boasts a 10-year service lifetime, smoke detection as well as heat detection. Since they are the "non-user-serviceable" type nothing else remains than to take it apart and see wha...
Electronics and programming interspersed at various levels of difficulty.