> Wirelessly linked smoke alarms are becoming extremely common now in the UK Also becoming a baseline feature in detectors in the US, in my experience. New ho

> Wirelessly linked smoke alarms are becoming extremely common now in the UK Also becoming a baseline feature in detectors in the US, in my experience. New houses have been using wired interconnect for a long time now, but in the last couple years I've helped several older relatives upgrade their smoke detectors and even the cheap ones have wireless interconnect now.