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GSM surveillance - Detective store
https://www.detective-store.com/gsm-listening-devices-122
The main advantage of the GSM audio bug GF-07 is its small size of 90x60x6 millimetres. It is therefore very easy to conceal. You need to insert an active SIM card in the device for the eavesdropper to be ready for operation. The built-in sensitive microphone picks up sounds at a distance of 5-6 metres and transmits them using a phone call.
Gsm Audio Surveillance - Lightinthebox.com
https://www.lightinthebox.com/Popular/Gsm_Audio_Surveillance.html
1080P CCTV Security Cameras WIFI 4G Sim Card Wireless PTZ IP Security Cameras 2MP HD Security Outdoor Surveillance Two Way Audio CamHi. $94.84. USD $56.09 (10) Indoor IP Network Cameras. 4K 8MP SONY IMX415 Wifi IP Camera Cctv Security H.265 Intdoor Audio ln MIC Video Surveillance IR CUT 940nm Stealth Led Camhi APP.
Amazon.com: Audio Monitor Mini N9 GSM Device Spy …
https://www.amazon.com/Monitor-Listening-Surveillance-Personal-Acoustic/dp/B08DN9PG6Z
1. Automatic monitoring function, as long as the normal exceed 40dB volume iswithin 10 meters, the product will start an alarm, it will automatically call back, dial or send a text message to the bound number in turn. 2. You only need to dial the number of the SIM card installed in the device, then you can hear the sound within 10 meters near the device within a few seconds.
Amazon.com : KSRplayer N9 Wireless GSM Listen Audio …
https://www.amazon.com/KSRplayer-Wireless-Surveillance-Quad-band-Wiretapping/dp/B01DEOG6F6
Audio Monitor Mini N9 GSM Device Spy Listening Surveillance Personal Device Acoustic Alarm Built in Two Mic 37 2 offers from $13.99 N9Upgrade Version Wireless GSM Tracker Ear Bug Quad-Band Listen Two-Way Call Back with Tracking Function 4 2 offers from $29.99 Wireless SIM Card GSM Bug Audio Monitor Listening Device Voice Activate Bug Hot 8
GSM Voice Transmitter Mini Spy GSM sim Ear bug Audio ...
http://www.bathspycamera.com/spy-gsm-audio-bug-gsm-voice-transmitter-mini-spy-gsm-sim-ear-bug-audio-surveillance-device_c760.html
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