I need to replace my old Nest protect after 10 years, another great product, but the price was just too much for me to replace with a new one. I saw the XSeries and after reading other reviews bought this one. Really impressed, and for the price it came with 3 co2 smoke combos. Really easy to set up. The app walks you through it. The only issue I had with set up was when pairing the unit to the base, I used the app instructions set the location and proceeded, but when I got to the pairing it asked me for location again, and I had to go back, not a big deal. Beyond that it was super easy to set up and connect all the units. I even bought the smoke only dectors to go with this, they also paired very easily. Also installing is a breeze, just use a big enough drill bit for the holes if you need the plastic fastiners that come with the screws. If you need a new Co2 smoke combo highly recommend this one.

Excellent product! Had some trouble getting the alarms to connect up to the base station, but after doing a software update on the base station then they connected no problem. Limited room names, but made it work. Would of like to customize the room names, but that did not work for me.

My 12+ year-old Kidd alarms that were installed before I purchased my home started chirping in the middle of the night, two of them for two nights in a row! I was going to replace them with Kidds again, but I nearly spent more money for those alarms with fewer features than the X-Sense. I just got the X-Sense delivered and installed today. The build quality and appearance are great. It was extremely easy to set up the base station and the alarms, connect them in the app, and test them. It was also easy to install. I especially love the voice feature that announces the location of the alarm. Since my house has a natural gas furnace, water heater, and oven, I’m especially glad to add CO2 alarms to my home. I’m very pleased and I hope the battery life and reliability is as good as everything else.

Great product, way easier to setup than first alert or kiddle.2 things to note for:1. Unlike comparable product with first alert and kiddle, when pushing on the test button, only one device alerts, even though other devices are linked through the base station, they stay quite. You have to test either with a smoke spray or through the app - if this can be improved it would be great.2. The product is not UL certified, be aware if you need devices fit those criteria - e.g. when city comes for inspection.

I love that these can be monitored and silenced from my phone. Saves pulling out the step stool if something burns in the oven and gives peace of mind when we aren’t home.