Spy listening device spy wall ear bug/Wall Detection high sensit
F999B is a high-sensitivity next-door spy listening device.
Composed of metal receiver and high penatrating detecting metal receiver and high-quality earphone, bringing out the best bugging effects.
Unique FM transmitting function
Highly portable and easy to operate.
Essential equipment to collect evidenceSpecification:
Current Consumption: 10mA
Battery: 3.7V lithium battery
Four-band Frequency: A (200Hz), B(800Hz), C(1200Hz), D(probe bugging)
Probe Sensitivity: -70db
Maximum Audio Magnification: 20, 000 times
Listening Ways: Earphone, records, wireless FM transmitting
Penetrability: Cement wall, Steel wall, wooden wall, iron wall, glass and air brick
Put the earplug into headphone hole, the sonde into the MIC hole, and clockwise rotate the "switch on/off" button of the volume. When the indicator light of the power works, booth the machine and adjust the volume, smoothly stick the sonde to wall the need to be monitored, adjust the gear-choice buttons A B C until you can clearly hear the sound from the room.
If you need to do the sound recording, you can use recording equipments to go through the mouth of the recoding to connect the audio cable for recording. Also, F-999B has another special FM wireless emission function, with specialized FM receiver which can receive the information afar and monitor that.
The indicator light works when it is charging please shutdown in case of damaging the machine. It needs to charge for about five hours. The sonde must smoothly stick to the wall`s surface; never move the sonde when you are sticking it to the wall in case of damaging the sonde. The effect of the monitoring depends on the thickness, materials and other features of the wall. Appropriately adjust the gear-choice button until you can get the best effect of monitoring. D is the partition monitoring bougie of the sonde is the refined part which should not be dismantled or touched discretionarily.
1* Main Unit
1* User Manual