Fig. 1: GPS-GSM Plus 2 collar. Suitable for tracking large predators. The housings are built of
special protection material. The GSM modem is in the white box.
Total weight 800 g (with 60 cm collar lenght).
Positions (worst case): 8300
The red magnet deactivates the collar (all electric circuits are interrupted, but serial communication
with PC is possible). If the magnet is removed the GPS- and other collar functions are activated.
Fig. 2: Detail view of the box on top of the collar. The box is housing the GPS satellite antenna
and further electric components
Fig. 3: Detail view of the collar in fig. 1: battery box at lower part of the belt
Fig. 5: GPS GSM collar with drop off mechanism
Fig. 6: GPS Plus 3 collar suitable for ungulates
Fig. 7: Moose with GPS-GSM Plus 4 collar (collar weight: 1150 g)