Customer Reviews For The USI 120-Volt AC/DC Wired-In Ionization Smoke Alarm USI-1209HA

Snapped right in.

Units replaced in 5 min. Without any problems

I am glad to have found the same model of Smoke Alarms that I had in my home. I hope when I have the fire dept. install them that all 5 alarms do not start going off at the same time. This is what happened before. Do you know if there is 1 master unit and if so how can it be determined?

Great product. Just as described.

I purchased these smoke detectors because the previous version of them was installed in the house for the last 11 years. Got the latest version and plugged them in after removing the last ones. No wiring required and super convenient.

We did not notice that our hard wired smoke detector had expiration dates until a couple of them began to alarm and would not stop although there was an absence of smoke. These replacements fit perfectly into the casing that were installed 10 years ago with simply joining the connection. Easy fix for expired smoke detectors.

Perfect fit and great instructions. Plug and Play, so easy to install. Recommended to all.

Exact fit with older model.

These were a great replacement to my current ones that are over 10 years old and have been discontinued.

We put them all up and all are working beautifully.

Brought this product as replacement as old smoke detectors were over 10 yrs old. Wanted to fit the base of old product which it did

Good product. Fitted my old USI smoke detectors base perfectly

for the price and quality that is the best one

Easily ordered, arrived on schedule and installed with absolutely no problems.