There are about 3 frequency bands of Wireless Camera/Audio in the market. You will be able to HEAR the Audio Bug Transmitter or see the wireless Video Live or Both
Those are the Most Popular A/V frequency in the Today Market
2.4 GHz wireless camera /Audio was the mainstream, but 2.4G channel is too
crowded and has heavy interference with other 2.4 GHz wireless devices.
1.2 GHz wireless Cameras /Audio, flood in market, because of its cheap price.
But the dealer should be careful, 1.2 GHz band (965 MHz - 1280 MHz)
is a restricted frequency band for government and aviation use.
Violations of the regulation may subject the violator to criminal
sanctions, including imprisonment.
5.8 GHz is a new and clean land for wireless cameras/audio , you might find
that more and more 5.8 GHz wireless cameras appear in market this year.
Display: 2.5 TFT LCD
Video Support: NTSC/PAL Standard
Scanning Range: 965~1280MHz, 2400~2483.5MHz, 5724~5870MHz
Operation Mode: Auto / Manual
Antenna Connector: SMT
Battery Life Indication: LED Indication
Power: INTERNAL: 3.7V Li-ion(2200mAH) / EXTERNAL: DC 5V/2A Adaptor
Frequency Display: LCM
Manual Scan Mode: 1 MHzc, 10 MHzc
Video/Audio Output: 3.5” Phone Jack
Alarm Output: NC / NO Switch
Sensitivity Adjustment: 5 Sections
Buzzer: ON/OFF Switch
Vibration Alert: ON/OFF Switch
Operation Current: 750 mA
Battery Lifetime: 2.5 Hours
Dimension: 95(L) x 94(W) x 24(H) mm
Weight: 164g (without Battery)