What the hive heart can do:

1. hive humidity
2. hive temperature
3. bee sound analysis
4. loss of the queen warning
5. swarming forecast
6. large humidity warning 
7. every 10 minutes new data
8. internal memory for 2 months
9. cloud archive for 5 years of data
10. communication by smartphone via Bluetooth
11. communication by external GSM module
12. free mobile app for both iPhone, Android 
13. thickness only 8mm
14. open air communication distance 100m, after insertion into the hive 5m to 50m
15. web application for personal computers and export to MS Excel (optional)
16. battery is included
17.battery duration for one year
18. no additional fees          

Manual:
The heart of the hive is enough to lay inside the horn on the frames and insert the battery. Then you download the mobile application, scanned the QR code that is included in the package and the application automatically connects to your heart. You do not have to set anything up.
Dimensions: 70x60x8mm
Weight: 30g