Quad Band GSM Listening Device Work All The Time

Quad band gsm listening device work all the time


The product supports the a the GSM850/900/1800/1900 network and GPRS standard quad-band, and can switch seamlessly between different networks. Compact; Signal strength; Voice; Precise positioning; Stable performance; The long standby; Globally. Function is its greatest advantage.

Power on: Open the back cover, the SIM card inserted into the card holder automatically boot until the indicator goes off, you can use

Monitoring to detect: Normal boot, when necessary monitoring tools can dial the dial is turned to hear the status of the location around 10 meters

Voice Callback:
To unlock the phone: Dial the SIM card number in the alarm, with fixed-line or mobile phone to get through immediately hang up after that setup is successful, the default alarm status. (35 decibels of sound when the alarm within 4 meters, the alarm will automatically dial the number set)
SMS opens: Edit SMS "KQSK" sent to the alarm (35 decibels of sound when the alarm within 4 meters, the alarm will automatically dial the number set)
Manual sensitivity adjustment: User edit SMS "KQSK # 30 #" is sent to the alarm. "The KQSK behind the numbers" 30 "is the sound detection sensitivity value 20 (high sensitivity) -500 (low sensitivity)

Note: The phone open and SMS open can not operate simultaneously, they need to switch between first-mover "CLOSE" command to shut down one of the ongoing, and perform other operations, two functions close operation are editing SMS "CLOSE"is sent to the alarm device
Electricity the query instructions: Hair "power" command, such as the user edit SMS "power" to the alarm, the alarm will detect electricity accordance with different power will return the following SMS:
"Tracker battery full" (said the aircraft battery is full)
"Tracker battery half" (aircraft power medium)
"Tracker battery low" (the aircraft battery is low and should be promptly charged)