App sucks and the units are horrible to use
We installed a bunch of ultimaX5000 CO sensors. At first some of us could connect using the app then it just stopped working. Even on sensors that we had already connected to, it just didn’t work. The units haven’t had any update and the app hadn’t been updated before we tried again. We then updated the app and still had no luck. Apparently the app is supposed to be updated again but I doubt that it’s going to be any good. Also, the infrared buttons on the units are horrible. Infrared buttons on any instrument are garbage.