After ten (10) years of cumulative power up, this unit will “chirp” two times every 30 seconds. This is an “operational end of life” feature which will indicate that it is time to replace the alarm. To help identify the date to replace the unit, a label has been affixed to the side of the alarm.

Benefits of owning and installing a 10-year sealed battery alarm in your home include: No need to remember to change batteries every 6 months. Eliminate late night, low-battery chirps. An end of life warning lets you know when it's time to replace the alarm.

With a sealed, long-life lithium battery smoke alarm, homeowners can enjoy peace of mind knowing that their homes' smoke alarms are always on – operating 24 hours per day, seven days per week for 10 years. The National Fire Protection Association recommends replacing smoke alarms every 10 years.

Recall Details The recalled units are Kidde Model Series 2040, 2050, 2060 and 2070 Smoke and Combination Smoke/Carbon Monoxide alarms. Only alarms with the TruSense logo or “AMBER=FAULT” printed on the front of the alarm are included in this recall. The model number is printed on the back of the alarm.

Or helps to reset the unit. So now we can just put that new battery back in. And then close the door. You might hear a small chirp.

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.

If your smoke alarms are powered by a nine-volt battery, the battery should be replaced every 6 months, while the alarm itself should be replaced once every 10 years. For 10-year lithium-powered fire detectors, you won't need to replace the battery.

From the Manufacturer Alkaline batteries in smoke detectors have to be changed every year. With the Ultralife 10 Year Battery, state-of-the-art lithium technology keeps your life-saving detector energized for a full 10 years.

If your smoke alarms are powered by a nine-volt battery, the battery should be replaced every 6 months, while the alarm itself should be replaced once every 10 years. For 10-year lithium-powered fire detectors, you won't need to replace the battery.

I've been happy with this product. We bought a house with only one smoke alarm. We put Kidde alarms all over. They work well and the price is right.

Kidde recommends replacing your smoke alarms every5/ 10 years, and carbon monoxide alarms every 7/10 years. If you don't know how old your alarm is, look for the manufacturing date code on the back of the alarm(s) or simply replace them to avoid any danger​.

CR's take: Another top performer in our tests is the Kidde PI2010, which receives the highest scores possible in our flaming fire and smoldering fire tests. This hardwired, dual-sensor alarm features a battery backup, a hush button, and the ability to interconnect with other compatible detectors.