Features: 1.WIRELESS DESIGN: Adopting wireless transmission technology, it can transmit the outdoor temperature and rainfall data to the indoor host without using any cable connection. 2.INDOOR AND OUTDOOR TEMPERATURE MONITORING: With a wide range of indoor and outdoor temperatures, users can clearly understand the temperature changes indoors and outdoors and make adjustments accordingly. 3.RAIN MONITORING: Equipped with a rain sensor, it can accurately measure the rainfall, helping users to understand the rainfall situation and make good rainproof work. 4.MULTIFUNCTIONAL DESIGN: In addition to temperature and rain measurement functions, it also has practical functions such as calendar, time, alarm clock, etc., which is convenient for users' daily use. 5.LOW BATTERY WARNING INDICATOR: When the battery is low, there will be an indicator light to remind users to replace the battery to avoid inaccurate data due to battery problems. 6.ORANGE BACKLIGHT DESIGN: Orange backlight is turned on during night time use, which is convenient for users to view data in dark environment. specification:Item Type: Wireless Rain Gauge and Thermometer Material: ABS Indoor Temperature Range (/ Optional): 0?50(14?122) Outdoor Temperature Range (/ Optional): ?20 to 60(?4 to 140) Functions: Calendar, Time, Alarm Clock, Low Battery Warning Indicator, Orange Backlight, Etc. Display Battery Type: 2 x AAA Batteries (not Included) Rain Gauge Battery Type: 2 x AAA Batteries (not Included) Outdoor Sensor Battery Type: 2 x AA Batteries (not Included) PackageList: 1 x DisplayScreen 1 x RainGauge 1 x Sensor 1 x InstructionManual