2 Pack Upgraded Combination Smoke and Carbon Monoxide Alarm Detector, Dual Sensor Smoke Alarm&Carbon Monoxide Detector (Includes Battery)

Great product for the price installed them in the hallway and basement tested them and they worked great

As described have to get used to the green light indicator blinking every 30 seconds

Easy installation. Test works well. Looks good.

I purchased a set of six combination smoke and carbon monoxide detectors, and after a month of use, I’m generally pleased with their performance. All six units worked right out of the box. The included drywall anchors and screws were a nice convenience, making installation simple.I tested the smoke alarm function using three birthday candles, letting them burn briefly before blowing them out and holding the alarm in the smoke. Each unit alarmed within 10–15 seconds and stopped quickly once removed from the smoke. The loudness is strong, and the test button, digital display, and indicator lights all work as expected. The CO detection registered a reading of about 10 ppm during testing.One standout perk is the lifetime battery replacement offer, which the seller confirmed promptly after I sent my order details per the instructions. However, my main complaint is that the detector's instructions are written in broken English. While most of it was understandable, the section on muting the alarm was confusing. I accidentally muted one unit but couldn’t figure out how to unmute it except by waiting over 10 minutes, and I wasn’t able to replicate the mute function afterward.Overall, these alarms seem reliable, and I appreciate the included features, but the unclear instructions keep me from giving a full 5-star rating.

We just got these yesterday and put them upso it is to soon to tell but they look nice and easy to install. I do have a problem with the light is so bright we had to put tape over the light but it is so bright it still shines through.We need to check to see if we can dim it a little.

As expected. Great buy

I purchased the 3-pack of these smoke and carbon monoxide detectors because the price was very reasonable, and I’m happy with my choice. The package arrived well-packed, with everything securely in place. I haven't installed them yet, but the included instructions are very clear.One thing I appreciate is that the batteries were really included, just as advertised. It made setup much easier since I didn’t have to go out and buy extras. The alarm is loud and easy to test, providing peace of mind. I did test them on place at my garage and with a smoke fired paper. Alarm soud was easily heard from aroud the house.Overall, this is a great value for the price. If you need multiple detectors for your home, this 3-pack is a solid option.

I only gave 3 stars because only 3 of the 5 worked pretty disappointing