Honeywell TE242ELW Personal Weather Station with Atomic Clock and Dual Alarm Displays the temperature at the main display location and up to 3 remote sensor locations Shows time in 12 or 24 hour format, and automatically updates via radio signal to the US atomic clock Features dual crescendo alarms with snooze function, and a programmable ice warning alarm System comes with one remote sensor with an operating range of 200 feet and -38 to 158 degrees F Main display and remote sensor run on 2 AA batteries each, and are backed by a 1-year warranty