根据后句Change the batteries at least once a year.You should use the test button each month to see if the alarm and batteries are still working.每年至少更换一次电池,每月使用测试按钮查看报警器和电池是否仍在工作,可知结合选项,应说烟雾报警器只有在正常工作时才有用。所以"C. ...
Occasionally, you will walk into a store and a bell will go off as you cross the threshold. If you look, you will often notice that aphoto beam detectoris being used. Near the door on one side of the store is alight(either a white light and a lens or a low-powerlaser), and on ...
The simple answer to why your kitchen smoke alarms goes off is “smoke,” but when you drill down a bit, things get more complicated. Smoke is an expected by-product of cooking, but normal cooking shouldn’t set off your smoke alarms. If your gear beeps all the time, it could be due...
You can also add alarms to hallways outside every bedroom, the top and bottom of all stairways, and often-forgotten places such as basements, attics, utility rooms, and garages. There are two kinds of smoke detectors: Battery-operated: These inexpensive units can easily be...
The message is clear: make sure you have plenty of smoke detectors, not just one, and check them regularly.Chart: Why do smoke detectors fail to sound during a fire? Here are the most common reasons. Source: UK Government Home Office: Data sheet Fire0704: Percentage of smoke alarms that...
Smoke alarms are often located outside bedroom doors. That means the alert sound needs to be loud enough to go through doors and wake up sleeping people in case of a fire at night. Alarms should also have a low-battery notification function that makes a repetitive beep when the battery pow...
A beeping smoke alarm gets on your nerves quickly, but that noisy alarm may be trying to tell you something. Smoke alarms often beep or chirp when something isn't right. The issue could be anything from a dying battery to a malfunction in the alarm's components. It's even more frustrati...
The technical aspects of smoke alarms: teaching how they work to save countless lives every year.(FIRE SAFETY EDUCATION)Szymanski, Timothy R
Replace smoke alarms every 10 years. Alarms monitor the home every minute of every day and their lifespan is not infinite. If you don't know how old your alarm is, you should replace it. Test your smoke alarm weekly and replace the batteries as needed. ...
A siren, often able to create a variety of sounds so that you can pick a distinct sound for your car A radio receiver to allow wireless control from a car key fob An auxiliary battery so that the alarm can operate even if the main battery gets disconnected A computer control unit that ...