5.4" (13.8 cm) displayWeather forecast icon (sunny, slightly cloudy, cloudy, rainy, snowy)Internal temperature and humidity measurement with development indicatorOutdoor temperature and humidity measurement with development indicatorMeasurement of barometric pressure in absolute and relative valuesInternal temperature measurement range: -5 to 50 degrees COutdoor temperature measurement range: -40 degrees C to +60 degrees CIndoor humidity measurement range: 20% to 90% RHOutdoor humidity measurement range: 1% to 99% RHDew point and heat index indicatorMax/min recording in memory with time-date indicationProtocol of the last 24 hoursAlarm setting High/Low (indoor/outdoor temperature and humidity)Indicator flashes when High/Low alarm is activeDisplay of time, calendar, days of the week and moon phaseBlack ice warning and comfort levelClock and date radio-controlled using the DCF-77 signal, with daylight saving time (DST) update (can be set manually)Date and day of the week (day of the week in 7 languages: EN/IT/ES/DE/FR/NL/RU)Temperature display on a degrees C / degrees F scale3 display brightness levels: high/low/auto dimSolar panel for automatic adjustment of backlight brightnessPlacing on a table or on a wallPossibility to connect up to 8 sensors1 sensor included (SWS TH8700-8800-7300)Sensor transmit frequency: 433 MHzMain unit power adapter: DC 5V / 1000mA (part of the kit)Main unit backup battery: 1 x CR-2032 3V (part of the set)Sensor power supply: 2 x 1.5 V type AA (batteries must be purchased separately)Main unit dimensions: (w/h/d) 118 x 192.5 x 21 mmWireless sensor dimensions: (w/h/d) 61 x 113 x 39.5 mmMain unit weight: 280 g (including batteries, without adapter)Wireless sensor weight: 92 g