Are these fall alert devices dependable in this area?

My dad’s in Boca Raton and he’s been struggling a bit more lately. He’s living alone and still insists he’s fine, but we’ve had some moments where he nearly fell and now it’s just making me anxious. I’ve been reading about Bay Alarm Medical Alert and it looks pretty solid, but I can’t tell if it actually works well in Boca Raton. He’s near Glades Rd and his condo has pretty thick walls. Anyone in the area used it? Or something else that worked better?