Bluetooth® 4.2 LE standard

Range: up to 70 meters (230 feet)
Output Power: -20 to +4 dBm in 4 dB steps, “Whisper mode” -40 dBm
Sensitivity: -96 dBmA
Frequency range: 2400 MHz to 2483.5 MHz
No. of channels: 40
Adjacent channel separation: 2 MHz
Modulation: GFSK (FHSS)
Antenna: PCB Meander, Monopole
Antenna Gain: 0 dBi
Over-the-air data rate: 1 Mbps (2 Mbps supported)

Material : non-flammable
enclosure: silicone
adhesive layer: double-sided adhesive tape