These devices help to keep your family safe. Here are our best smoke alarm recommendations from trusted brands like First Alert and Google.
A dying battery or unreliable power supply is the most common cause of false alarms on the FireX smoke alarm. Replace the battery in the smoke alarm at least once a year to ensure proper operation. Only use new9-volt batteriesas replacements. Do not use rechargeable batteries. If the unit ...
To find out how old a smoke alarm is, as well as its expiration date, simply look on the back of the alarm where the date of manufacture is marked. Smoke alarms should be replaced 10 years from the manufacture date. Any alarms with a manufacture date of 2012 or earlier should be ...
NFPAPublicEducationDivision•1BatterymarchPark,Quincy,MA02169 .nfpa/educationYourSourceforSAFETYInformation • Roughlytwothirdso home redeathshappeninhomes withnosmokealarmsorno workingsmokealarms. • Workingsmokealarmscut therisko dyinginreported ...
A. A smoke alarmB. A pair of eyeglassesC. A wheelchairD. A lot of money 相关知识点: 试题来源: 解析 A 在房屋火灾中,烟雾报警器可以及时发出警报,让人有更多时间逃生,从而降低丧生风险。其他选项与降低火灾死亡风险无关。因此,答案为 A。
The instant reaction is to find a way to silence the alarm. Unfortunately, some people may even pull down the alarm or take out the battery to make the piercing sound stop. To avoid the problem in the future, many choose not to reinstall the smoke alarms, creating a potentially deadly ...
A. A smoke alarm.B. A pair of eyeglasses.C. A wheelchair.D. A telephone.( )57. We may have only___to escape from a house fire safely.A. half an hourB. 2 minutesC. 20 secondsD. one hour( )58. According to the poster,___can help save you from a house fire.A....
As a smoke alarm's battery nears the end of its life,the amount of power it produces causes an internal resistance. ... 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...
Editor's note: MVS Chandrashekhar is a professor of electrical engineering at the University of South Carolina. In this interview, he explains how smoke detectors work and why they sometimes sound an alarm for what seems ...
A pair of eyeglasses.C. A wheelchair.D. A telephone. 相关知识点: 试题来源: 解析 A. A smoke alarm. 在房屋火灾中,烟雾报警器可以及时发出警报,提醒人们逃生,从而降低死亡风险。其他选项如眼镜、轮椅和电话,并不能直接降低火灾死亡风险。因此,正确答案是 A. A smoke alarm.反馈 收藏 ...