Nest Labs CEO Tony Fadell has issued a public letter informing customers that Nest Protect Smoke + Carbon Monoxide Detector’s (iLounge Rating: B-) alarm may be delayed in the case of a fire under the right circumstances. This issue is related to Nest Wave, a feature that allows the alarm to be turned off with a wave of the hand, and has been discovered in laboratory testing only; no issues have been reported from customers. Nest is offering…