Smoke detectors are installed within each residential unit. Smoke detectors are designed to provide an early warning of a fire. Residents are responsible for maintaining the smoke detectors in their units, including changing the (9 volts) batteries and testing them by pressing the test button. It is recommended that you change the batteries and test the units when you change your clocks for daylight savings time (twice each year). See building maintenance if you need instruction. As batteries die, smoke detectors will chirp. IMPORTANT TIP: Once the battery is changed, there will be a steady green light and a flashing red light. If you do not have this, there is a possibility that your smoke detector is not hooked up to power in the ceiling. See building maintenance about it.nIt is important to note that the unit smoke detectors are not connected to the building fire alarm. Nonemergency services will be notified of a smoke alarm within your unit. If you have a fire within your unit, you need to call 9-1-1 to report it immediately. There are smoke detectors in some common areas of the building connected to the building fire alarm system, and if activated, the Fire Department will respond to this alarm.