Large backlit LCD display unit Total Hourly, Daily, Weekly, Monthly and Yearly rainfall 150 m sensor transmission range High / Low Alert function Alarm function with ice-alert function The Nylex Digital Rain Gauge has a wireless self-emptying rain collector for measuring rain fall. The wireless rain collector sensor transmits data by using a low power radio frequency to the display main unit that can be located up to 100m away (within line of sight). The display unit stores the data over a time range to allow you to monitor and analyse the weather status for past 24 hours. It has advance features such as the HI/LO Alert alarm to alert you while the set high or low weather criteria are met. The system also analyses the records of rainfall in terms of rain rate, hourly, daily, weekly, monthly and yearly records for your convenience. With a Radio-controlled / Atomic clock feature also built-in, the system is truly a remarkable personal but professional rain gauge for the backyard.