Multi-tasking Mobile Phone Signal Detection System SJ-009

It is specifically designed for immediately detection transmission signals of any Mobile Phone system within its effective range, then send out alarm signals or voice to the monitoring staff.

It can also link with Mobile Phone Jamming device (optional) through its own AC power socket and prevent concerns over the always-on broadcasting of jamming electro-magnetic waves.

The actual operation is started by conducting detection within its range first. It will not activate the jamming device if there is no transmission signal round. Once there is any Mobile phone signal present, it will immediately inform the jamming device to activate the jamming broadcasting. The whole operation and response do not exceed 20 minutes.

Advantages and Functional Features

It simultaneous detects four bandwidths (GSM/DCS/CDMA/3G) transmission signal.
Each band is designed with individual detection circuit for high sensitivity and consistency.
Broad band Log Amplifier design.
Active striping filter designed for high selectivity and low false alarm.
It can look through the Mobil phone signal and automatically activate the jamming device to break the communication when needed. Therefore it can eliminate the health concern of always-on jamming radio wave to human body.

Specification:

Working bandwidth:
	CDMA:	824 ~ 849 MHz
	GSM:	890 ~ 915 MHz
	DCS:	1710 ~ 1785 MHz
Sensitivity:		≥ -55 to -30 dBm
Detection range:		15 ~ 30 m
Jamming control (Detection first):		Power on/off
Data transmission rate:		2.4 Kbps Half Duplex
Data modulation:		FSK
Data reception sensitivity:		1 mV rms (typ)
Data error rate (BER):		10^-5 (S/N = 15dB)
Working voltage:		12 VDC
Power consumption:		< 500 mA
Working Temperature:		-10°C ~ +70°C
Packing size:		32.5 × 25 × 9.5 cm