Features:u25cf Measures indoor and outdoor temperature(C/F) and humidityu25cf Indoor temperature range:-10u2103-50u2103uff0814u2109-122u2109uff09u25cf Outdoor temperature range:-20u2103~60u2103uff08-4u2109~149u2109uff09u25cf Indoor and outdoor humidity range:1%-99%u25cf Max/min record of temperature & humidity (in & out)u25cf Weather forecast for next 12-24 hoursu25cf Calendar function with Month/Date or Date/Month display format selectableu25cf Time, alarm and snooze functionu25cf Time display in 12/24Hu25cf Weekdays in 7 languages:GER (German), ENG (English), FRE (French), ITA (Italian), SPA (Spanish), DUT (Dutch), SPA (Spanish), DAN (Danishuff09u25cf Temperature tendency display in arrowu25cf Up to 3 RF channels for outdoor sensors (only one sensor included)u25cf White backlight lasts for 20 secondsu25cf Sound / Mute Mode SwitchSpecification:Item size:Main Unit: 119x21.5x80mm(4.68"x0.85"x3.15"in)Sensor: 60 x 27 x 96mm(2.36" x 1.06" x 3.78"in)Box size:155x37x170mm(6.10"x1.46"x6.69"in)Net weight:280g Package weight:300gColor:WhiteMain Unit Powered by 2 x AA batteries (Not Included)Remote Sensor Powered by 2 x AA batteries (Not Included)Package List:1x 341 In/out THERMOMETER1x WIRELESS SENSOR1x Instruction Manual