hidden usb cable gps tracker & GSM Bug AVP031DJ

Boot: open the lid, put the GIM card into the deck automatically boot. (in order to hide, easy to use this product without indicator light)
Monitoring detection: insert the GIM card 10 seconds later, when the need to use communication tools to call the device inside the GIM card can be monitored.
Tracking and positioning: edit SMS DW sent to the device inside the GIM card, check the current location of the device.
Voice callback: edit the 1111 text messages sent to equipment inside the GIM card, open voice callback, alarm function. (when the equipment near the sound more than 45 dB, the device will automatically dial the set number) off voice dialing back alarm function, edit text messages sent to the 0000 equipment.
Operating frequency 850MHZ, 900MHZ, 1800MHZ, 1900MHZ