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Function: * 5 types of weather forecast
* Last 12 hours’ barometer dynamic BAR picture.
* Calculate sunrise and sunset time of 150 European cities.
* Moon Phase.
* Tide: H, M, L
* Indoor temperature: -10°C - +60°C; Indoor humidity: 20%-95%.
* Indoor comfort index: dry, comfort, wet.
* Indoor temperature /humidity trend.
* Indoor temperature and humidity MAX/MIN memory. 
* Indoor temperature alert: up limit: +60°C, low limit: -10°C.
* Indoor temperature heat index and dew point.
* Indoor heat index at 4 grades
* RF outdoor temperature, up to 3 outdoor transmitters’ receivable.
* Outdoor temperature: -25°C- +60°C; Outdoor humidity scope: 20% - 95%.
* Outdoor temperature /humidity trend.
* Outdoor temperature and humidity MAX/MIN memory.
* Outdoor temperature alert: up limit: +70°C, low limit: -40°C.
* Outdoor temperature heat index and dew point.
* Outdoor heat index at 4 grades: caution, extreme caution, danger, extreme danger.
* Barometer units for option: mb/hPa, in/hg, barometer trend indication.
* Barometer value memory of last 12 hours.
* 6 digits show hour, minute, second.
* Dual alarms.
* Low battery detector for indoor and outdoor unit.