Detailed Product Description

gsm listening bug
1.Frequency:900/1800/1900MHz
2.3.Monitor Range:10-20M
4.Voice activated
5.hidden gsm bug

Brief introduction:
GSM bug, actually, it is a audio surveillance device. You can insert a GSM SIM card into it, put it anywhere you want to listen. And then you can call it using another phone. You can hear the voice around it and others don't know you are listening.

How to use it:
1.Installation
put it in the place with good gsm network signal.
2. Set master number
Switch it to the B position and then use your mobile phone send SMS command "GDM" (Please note, GDM use capital.) Then your mobile phone number will be the master number.
3. Sound control function:
Put the switch to the B position. (If you don't need sound-control function, please switch out to the A position.)

Features:
charge 6-8 hours before first using, in order to achieve better results.
Pls use the charger that is equipped with the machine.
Standby time: When use sound-control, it will standby 3-5 days. If not, it will standby 6-15days. but it depends on frequency of use.
Check SIM card whether is put in right place or put the card into plug again to restart.
put the card into plug again to restart.
Check whether its GSM card, because this machine is used GSM network
Check the signal strenth in the installation by your mobile.

Package:
1 x ashtray gsm listening device
1 X Charger
1 x USB charger cable
1 x screwdriver