Like Nests’s futuristic thermostat, its iPhone-controlled smoke/carbon monoxide detector looked like the perfect replacement for the antiquated systems used in most homes today. It turns out that the Nest Protect was a little too good to be true.
Since the device went on sale in November of last year, Nest has discovered that one of the Protect’s hallmark features can malfunction. And that happens to create big safety concerns. Until the issue is resolved, Nest Protect sales have halted.