Hive scale is a best present for any beekeeper. It is universal for all types of bees and easy to use.
What you get:
1. Nectar flow (per hour, day, week, month and info)
2. Swarming and robbing alerts!
3. Does supers full?
4. Is winter feeding required?
5. Compare colony strength and productivity
6. Theft alerts!
7. Number of bees.

Hive monitoring of the Hive-heart is best present for the beekeeper. It is universal for all types of bee hives and easy to use.
What you get:
1. Inside temperature, humidity and sound. (numbers and graphs)
2. Lost of bee-queen alerts!
3. Swarming prediction (3week, 2week, 1week before)
4. Robbing alerts!
5. Strength of colony in winter