What is a latching alarm on a smoke detector?

Asked By: Wenli Hogerl | Last Updated: 13th April, 2020
Category: home and garden smart home
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Latching Alarm Indication – Alarm Latch and Low Battery Latch Every BRK photo and ion smoke, combination and CO alarm has a Latching Alarm feature. The unit “latches” or remembers which alarm initiated the event. The Latching Alarm feature will remain active until you press the test/silence button.

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Likewise, people ask, why is my smoke detector flashing green?

Most smoke detectors, the green LED is used for indicating power status. With my smoke detector (Kidde brand), flashing green means low battery or no batteries installed. With constant green, it means AC power connected. It will blink green every 60 seconds if AC disconnected, powered by batteries.

Also Know, why is my smoke alarm beeping 3 times? When the batteries are nearly discharged after working for a period of time, in some cases up to 6 months or 1 year, for the replaceable type, the smoke sensors are designed to make a beep sound at intervals as a warning that the battery need to be replaced or recharged. Discharged batteries also lead to False alarm.

In this way, why is the red light flashing on my smoke detector?

The flashing red light gives a visual indication that the smoke alarm is functioning properly. It also indicates a working battery is connected to the smoke alarm.

Should a smoke detector have a green light?

Mains powered smoke alarms are required to have a green “Power ON” LED indicator. This will light up when the alarm is connected to mains power. All smoke Alarms also have a red light that flashes momentarily every 40-60 seconds to visually indicate they are operating.

32 Related Question Answers Found

What does the red and green light mean on a smoke detector?

This smoke alarm is equipped with red and green LED indicators. The green LED (when illuminated) indicates the presence of AC power. The red LED has four modes of operation: Standby Condition: The red LED will flash every 30-40 seconds to indicate that the smoke alarm is operating properly.

Why does my fire alarm go off at night?

This battery characteristic can cause a smoke alarm to enter the low battery chirp mode when air temperatures drop. Most homes are the coolest between 2 a.m. and 6 a.m. That's why the alarm may sound a low-battery chirp in the middle of the night, and then stop when the home warms up a few degrees.

What does a blue light on a smoke detector mean?

Model Ei405TY - When the Alarm beeps and the red light flashes at the same time or the blue light flashes every 9 seconds it indicates the battery is depleted and the entire alarm must be replaced. This normally occurs after 10 years has elapsed (see figure 7 to remove unit from the mounting plate).

Why does the smoke alarm go off for no reason?

Dust can reflect the light particles, similar to smoke, which gives you a false fire alarm. To clean, simply remove the outer casing. Leave a careful amount of space between the smoke detector and bug spray. Keep in mind that harsh chemicals can also cause smoke detectors to go off.

Do you have to reset smoke detector after changing battery?


The only way to clear this error is to reset the smoke detector, which can be done by following these simple steps: Remove the battery from the smoke detector. With the battery removed, press and hold the test button for 15-20 seconds. Replace the new battery in the detector and plug in the power supply.

Why is the green light flashing on my First Alert smoke detector?

A flashing green light is a normal part of the power up cycle. On First Alert® carbon monoxide alarms, the red light flashes to show the Carbon Monoxide Alarm is properly receiving battery power. If you do not see the red light flashing, change the batteries in the alarm immediately.

How do you reset the red light on a smoke detector?

Press the “Test,” “Silence” or “Hush” button to reset the smoke detector if it has a blinking red light. Press "*72" (star, seven, two) to reset a smoke detector on an alarm system with a keypad.

Why is my smoke detector blinking red every 10 seconds?

If the smoke is not too dense, the alarm will silence immediately and the red LED blinks every 10 seconds. This indicates that the alarm is in a temporarily desensitized condition. The smoke alarm will automatically reset after approximately 10 minutes and sound the alarm if particles of combustion are still present.

How do you reset smoke alarm after replacing battery?

Resetting the Alarm
  1. Turn off the power to the smoke alarm at the circuit breaker.
  2. Remove the smoke alarm from the mounting bracket and disconnect the power.
  3. Remove the battery.
  4. Press and hold the test button for at least 15 seconds.
  5. Reconnect the power and reinstall the battery.

How do I reset my smoke alarm?


1. Reset the Smoke Detector
  1. Turn off the power to the smoke detector at your circuit breaker.
  2. Remove the detector from its mounting bracket and unplug the power supply.
  3. Remove the battery from the smoke detector (if there is a battery).
  4. With the battery removed, press and hold the test button for 15 to 20 seconds.

How long will a smoke detector chirp before it dies?

Usually, when a smoke alarm or carbon monoxide alarm is chirping (one quick little beep every 2 minutes or so), it means the battery is dying.

Will taking the battery out of a smoke detector stop the beeping?

Removing the battery from a smoke alarm, also called a smoke detector, won't set the unit off and start the fire alarm beeping. Instead, it will likely do the opposite and disable the unit. Because of this, there is really only one reason for you to ever remove the battery and that is to replace it with a fresh one.

What does the hush button on a smoke detector?

What does the "hush" feature do on a smoke alarm? The “hushfeature will silence the alarm for several minutes giving whatever set off the alarm, smoke from burnt toast or steam from a shower for example, a chance to dissipate.

Why does my smoke alarm beep every 15 minutes?

Any of these reasons can cause your smoke alarm low battery chirp: The alarm will then “chirp” once every minute for up to 15 minutes. Make sure it's the smoke alarm. Other devices have comparable low battery chirps or warning sounds.

How do I silence a smoke alarm?


Reset the Smoke Detector
  1. Turn off the power to the smoke detector at your circuit breaker.
  2. Remove the detector from its mounting bracket and unplug the power supply.
  3. Remove and replace the battery from the smoke detector.
  4. With the battery removed, press and hold the test button for 15-20 seconds.

How long does the hush button on a smoke detector?

The "HUSH" feature has the capability to temporarily desensitize the smoke alarm circuit for approximately 7 minutes. This feature is to be used only when a known alarm condition, such as smoke from cooking, activates the alarm. The smoke alarm is desensitized by pushing the "HUSH" button on the smoke alarm cover.

Why is my fire alarm beeping randomly?

As the battery in a smoke alarm becomes weak, the smoke alarm will "chirp" about once a minute to alert you that the battery needs to be replaced. Note: Only the alarm with a low battery will chirp. No signal is sent through the interconnect wire.