F-999B High Sensitive Partition Monitor / Ear Voice Monitor Audio Thr-wall

F-999B Thru-wall spy ear is a high sensitive partition monitor,use this superior metal made handset to listen another room conversation,its connect with metal receiver and high quality earpieces,built in lithium battery and unique PM transmitter function,easy to operation and carry.

How to use：

1) 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.

2) 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.

3) Sensitivity of wall detection FM wireless emission and receiver Signal-receiving by sonde and bougie Adjustable volume and frequencies Can be ranked as 007 level weapon

Specification ：

Primary Function: Partition monitor

Ports and switch

- Gear choice A/B/C/D

- ON / Volume +/- / OFF

- DC

- FM

- MIC

- 3.5mm headphone port

- REC

Electric current exhaust: 10mA

Battery type: 3.7V Lithium battery

Charging time: 5 hours

Continuous working time: About 100 hours

For audio choices

- A: 1200Hz

- B: 800Hz

- C: 200Hz

- D: Partition bougie monitoring - about 100MHz

Sonde's sensitivity: -70dB

Max. amplifying the audio: 20,000 times

Penetrability: Cement wall, steel wall, wooden wall, iron wall, glass and air brick

Answering patterns: Headphones, recording, wireless FM emission

Dimensions: 74×70×26 mm

Weight: 192g

Color: Stainless steel color

Cautions:

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.