Functions: * Time and calendar display

* RCC for optional (DCF/MSF/WWVB, excl.)

* Alarm and snooze 

* Indoor temperature and humidity

* RF 433MHz outdoor temperature and humidity, up to 3 outdoor transmitters' receivable

* Weather forecast dipslay

* Low voltage indicator

* Temperature trend of indoor/outdoor temperature/humidity

* MAX/MIN records of temperature and humidity, auto-clear at 0:00

* packing size: 55.5*23.5*33.5cm/20pcs