A chirping smoke detector could indicate that the battery that powers it is nearing the end of its life. The sensor could also be trying to warn you that it's experienced a malfunction. There could always be one of several environmental factors that are causing it to chirp. A new bill was signed into law by Andrew Cuomo in 2017 that bans all new smoke detectors from having a removable battery. Instead, they must be powered by a power source that is not removable and lasts at least ten years. The electricians at McCauley Electrical can help you remove your old smoke detector and replace it with a more modern one that adheres to the new safety laws.