Smoke Alarm Red Light Flashing Every 3 Seconds

Bright white light is very bright. Red/red-flashing light is cool -- not sure if I'll ever use it. Good fit and balance (with batteries in back). Lightweight and comfortable. Looks suitably geeky. Very happy with my purchase.

These batteries were exactly what I needed for my smoke alarm, and reasonably priced to boot. I stocked up on them.

We use this for our smoke alarm it seems to be working fine no problems at all. The price for other batteries are way too expensive.

This is a very nice headlamp, without two levels of white light, a red light and a flashing red light.  Having the battery pack on the back makes it much easier to balance and the straps are adjustable over a wide range.

My APC UPS sounded off every few hours with beeps and a flashing red light to let me know it was time to replace the battery. I ordered online and the battery arrived sooner than expected. I installed it and it's been working fine since. The part I especially like, I didn't have to shut everything off to install.

[This review was collected as part of a promotion.] I received Rayovac 9V 4-Pack HIGH ENERGY™ Alkaline Batteries in exchange for my honest review. A couple months before receiving these batteries I had changed the batteries in my smoke detector and it had acted a little strange, but it did go off when I tested it. When I received these batteries, even though it was early I changed it to one of the HIGH ENERGY batteries and discovered the smoke alarm wasn't working at all! I tried the other battery, just in case the new battery was defective, it didn't work either. Thanks to receiving these batteries I got a new smoke alarm and it may save my life!

[This review was collected as part of a promotion.] Since I just put these in my smoke alarm, I'm sure they will be long lasting. Nice looking batteries.

Love this doorbell. It’s clear picture and video is amazing. I also have the CO/Smoke alarm which connect to each other. I love the nest products.

[This review was collected as part of a promotion.] I recently changed the battery in my smoke alarm, so I would not be able to rate this particular battery's performance. However, I am familiar with Rayovac & I have been satisfied with this brand. I have used their 9 volt batteries in the past and I feel as if they did the job. I mostly just use this type of battery in my smoke alarms which I change them every 6 months.

Has Nest thermostat and smoke alarm at home.now just got the Nest hello and replaced the Ring doorbell. All I can say is that is a total different level and just one app can do anything.also works with google home. Very happy to get this Hello. Very strong to recommend Nest. It’s worth what you paid.