Top critical review
Didn't Last Long, Not Reliable, and Incorrectly Sounded The Alarm Tone
June 4, 2017
I bought this unit about a year and a half ago. It seemed to work fine while I've had it. However, the 4-tone emergency alarm sounded at 1:00 AM last night. Because the other alarms in the area did NOT sound, I erred on the side of caution, opening all the doors/windows, and turning on all the fans. Then I changed the battery on the unit and within 20 minutes, the unit was sounding the 4-tone emergency alarm once again. In addition, LED was displaying a great range of measurements -- everything in between 30 - 336. Seeing numbers so high was terrifying, so I immediately went outside. I also debated calling the Fire Department. However, since the other alarms in my home did NOT sound, the thought that this unit could be malfunctioning did cross my mind. Needless to say, I didn't sleep well and left all the windows open and fans going -- just as a precaution to make sure I wasn't going to die of C02 poisoning. In the morning, I tested the malfunctioning unit with yet another set of batteries and the 4-tone emergency alarm sounded within about 10 minutes.
First, the instructions show that the tone for a malfunction should be entirely DIFFERENT than the 4-tone sound that I heard -- the 4-tone audible decibel alert is supposedly reserved explicitly for the alarm. Not the case, the alarm sounded for a malfunction. There was also no visual indicator that the unit was malfunctioning -- No ERROR, No ERR, No LB message. Nothing whatsoever. Needless to say, I was at Lowe's at 7:00 AM sharp this morning buying the most expensive replacement I could find after a sleepless night. Connected the new alarms and low and behold -- I have had them hooked up for a few hours now and they haven't sounded once.
This was an inexpensive product -- and it definitely showed. The unit is now in the garbage and has been replaced by two more expensive, plug-in with battery backup First Alerts.