1) False alarms in hard-wired smoke alarms - fire safety.
2) Smoke alarm buyers guide - Fire and Rescue NSW
3) New Zealand Fire Service - Smoke Alarms

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hard wired fire alarms keeping going off

Smoke alarms are the single most important means of preventing fire-related deaths in the home. They warn people who would otherwise be overcome by toxic smoke gases in their sleep. Properly installed and maintained, they will give residents those crucial minutes they will need to escape.

Smoke alarms in the market fall under two basic categories: ionization and photoelectric. Ionization smoke alarms react quickly to open flame fires; photoelectric smoke alarms react to smoldering fires.  A dual sensor smoke alarm combines the features from ionization and photoelectric smoke alarms.

In addition, smoke alarms can be battery-operated or hard-wired. The difference between the two is that hard-wired smoke alarms are linked together so when one alarm goes off, all the alarms in the home activate. Battery-operated smoke alarms can be powered by a 10 year non-replaceable lithium battery or by a disposable 9-volt battery.

The Oregon Office of State Fire Marshal (OSFM) provides information to citizens and agencies to increase the number of residences with working smoke alarms and provides guidance on Oregon smoke alarm laws.​ For questions regarding smoke alarms, contact 503-934-8228 or osfm.ce@state.or.us .

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A hard-wired smoke detector is one that is connected to the home's main electrical system. It may also be connected to a central alarm system, allowing the fire department to be contacted automatically. Over time, the detector can gather dust, have a power surge or simply malfunction, resulting in false alarms or a steady chirping noise. Hard-wired detectors also contain a backup battery which, over time, can die. There are multiple things that you can do to rectify the problem and it is important to properly maintain your smoke detection system.

Locate the reset button on the surface of the smoke detector. Hold it down for 15 to 20 seconds and release. Wait a few minutes to see if the chirping stops. Use the ladder if you can not reach the device.

Use the canned air to spray the surface of the detector, especially the slots on the casing to clear away dust. Sometimes build up can cause the detector to go off.

The smoke alarm should be installed between each sleeping area and the remainder of the building or where a sleeping area is served by a hallway, install the alarm in the hall. Always install the smoke alarm on or near the ceiling in accordance with the manufacturer's installation instructions .

Hi, Can anyone help me work out why a hard wired smoke detector is beeping early in the morning? Most mornings it gives an intermittant beep starting around 4am. This continues until I eventually get up and after half an hour the beeping stops. I don't know if it is because I've truned the heating on or because there is air movement below it. The house was built 2 years ago so this unit is new and being hard wired I've assumed that it's not the batteries.

Most, if not all hard wired smoke detectors still have batteries and will beep when they need replacing, so worth checking. Does not explain why it only beeps in the morning though, I can't explain that.

What happens if the power fails such as you having an electrical fire? Hard wired smoke detectors have a battery backup, replace the 9v battery with a new Alkaline battery and the beeping will stop. The battery is getting to the end of it's life and when it heats up a little it's providing just enough additional power to not trigger the warning.

Every year we attend more than 3,500 house fires. In 80% of the fatal fires we attend smoke alarms are either not installed or not working.

Working smoke alarms are the best way to make sure you and your family get an early warning of a fire so you can get out alive.

Smoke rises and moves along the ceiling. It will move up stairwells and vertical openings. When it can't rise anymore it will build up, working its way down again. This means placing your smoke alarms on the ceiling will get you the earliest possible warning. If you must position it on the wall put it 100mm away from the ceiling to avoid dead air pockets.

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A hard-wired smoke detector is one that is connected to the home's main electrical system. It may also be connected to a central alarm system, allowing the fire department to be contacted automatically. Over time, the detector can gather dust, have a power surge or simply malfunction, resulting in false alarms or a steady chirping noise. Hard-wired detectors also contain a backup battery which, over time, can die. There are multiple things that you can do to rectify the problem and it is important to properly maintain your smoke detection system.

Locate the reset button on the surface of the smoke detector. Hold it down for 15 to 20 seconds and release. Wait a few minutes to see if the chirping stops. Use the ladder if you can not reach the device.

Use the canned air to spray the surface of the detector, especially the slots on the casing to clear away dust. Sometimes build up can cause the detector to go off.