Carrier frequency: FM108-118MHZ
Microphone sensitivity: -63dB ± 3dB
Impedance output: 600Ω±30%
Working voltage: DC1.5V
Directionality: one-way
Response frequency: 100HZ - 13KHZ
Rope length: about 3.5 meters
Effective distance: 10-15 meters
Microphone length: about 18 cm
Microphone diameter: about 2-4 cm
Receiver size: 11.2x4.7x1.8 cm