![]() Well, that all depends on the placement! This audio spy gadget is small enough to fit inside couches, under tables, behind computer monitors, etc. Anyone else ordering this device should only be ordering it as a simple toy This product is being sold as an investigative tools for law enforcement or licensed investigators.You can recharge the spy audio device by connecting the USB charger cable to the power charger.When it detects sound, the spy bug will call your cell phone.Power: Built In 200 mAh Rechargeable Li-ion Battery.GSM Frequency Compatibility: Tri-band (900MHz, 1800MHz, 1900MHz).Primary Function: Tri-band GSM Two-Way Audio Spy Device.(2) Allows the spy audio device to call you when it hears people talking! This feature makes it much more advanced than other GSM audio bugs on the market today. (1) Make a call to the audio device and you can instantly listen in to conversations! The built-in microphone works up to a 7 meter radius, so set this bug up wherever you want! This two-way audio spy device comes with two amazing functions: Just insert a SIM card into the audio spy device and your bug is active and ready for action! You can even place several of these spy audio devices and set them up at your desired locations like the bedroom, living room, conference room or office. Find many great new & used options and get the best deals for Mini Audio Spy Bug Wireless GSM Sim Card Listening Device with Sound Recorder at the best. Trying to find out the truth about what's being said behind your back? Now you can from a distance. This amplified signal is then samples using the built in ADC of the Arduino. The picked-up sounds then amplified using a preamplifier built around an operational amplifier. ![]() We have used a condenser microphone to pick up the sounds. You can also call it at anytime to listen in on conversations. The working of the Arduino Audio Spy Bug is fairly simple. How awesome is that? Simply insert a GSM SIM card and program it to your desired phone number for call back and now you're in the spy business! This two way GSM audio spy device can call you when it detects sounds around its vicinity.
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