Hardware
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Main features of the Bluetooth module are listed below:
Bluetooth v2.1 + EDR. Class 2.
TX Power: 3 dBm
Antenna: 2 or 5 dBi
Up to 250 unique devices in each inquiry
Received Strength Signal Indicator (RSSI) for each scanned device
Class of Device (CoD) for each scanned device
7 Power levels [-27 dBm, 3 dBm]
Scan devices with maximum inquiry time
Scan devices with maximum number of nodes
Scan devices looking for a certain user by MAC address
Classification between pedestrians and vehicles
The Libelium Bluetooth module is powered from 3.3 V. Next table shows average power consumption in different states of the modules.
Estate
Power consumption
Off
0
Sleep
<0.5 mA
On (Idle state)
2 mA
Inquiry at minimum power
33.5 mA
Inquiry at maximum power
36.5 mA
