GSM Audio Bug - Remote GSM Spy Bug with voice detect call back function

GSM Audio Bug - Remote GSM Spy Bug with voice detect call back function This GSM Audio Bug is made for convenient SIM audio surveillance,with Voice Detect Function to call your phone number when people speaking.it is allow you to listen the sound of its surrounding wherever you want to even from thousands mile away,just need plug a SIM card inside to start working automatically,its applied for most of Europe and Asia countries,this model do not works in USA,support GSM frequency of 850/900/1800/1900mhz
Features:
1.Call your phone number automatic by voice detect
2.Frequency: 850mhz,900mhz,1800mhz,1900mhz
3.Built in high sensitive microphone
4.Stand-by time over 5 days with voice detect function
5.All GSM SIM card compatible
6.Microphone sensitive range: 5~7 square meters
7.Receive sensitivity: -\+10K
8.Working temp: -40~50'C
9.Responding frequency: 1.2K~800Khz
10.Stand-by time over 8 days without voice detect function
11.Dimension: 52mm x 38mm x 17mm
How to use?
1.To listen in the GSM remote spy bug
Open the cover,insert the SIM into the slot with correct direction,the remote audio bug will power on,the LED will trun on 6~8 seconds then off,then you can dial the SIM number to listen in.
2.Setting the phone number
Move the switch at "A"side, send message with content"GDM13812345678" to the SIM number, "GDM" must uppercase,"13812345678" is the receiver phone number.
3.To Work with voice detect
Move the switch at "B"side, the GSM remote spy bug will start working with voice detect funcion, if move the switch at "A" side,the voice detect function will be off, only can answer when you dial the SIM card number.