Emitter size: 70*25*18mm
Receiving board size: 49.6*22.7MM
Directivity: capacitive directivity
Sensitivity: -44 (dB)
Frequency range: 40-16K (Hz)
Impedance: 680 ohm
Carrier frequency: 2400-2482Mhz
Modulation: GFSK
RF power: 0dBm
Maximum wireless transmission distance: 10-15 meters
Working voltage: polymer lithium battery 3.7V
Continuous working time: 8H