mobifinder®4 3G

mobifinder®4 3G is a device for detecting phones with 3G (UMTS) standard.

mobifinder®4 3G detects active mobile phones.
A mobile phone transmits RF signals in the following cases:
Paging (dialing)mbf4
Talking status
Establishment of stand by status (input of
Finish of stand by status
Changing of the assigned base station
Periodical updates during stand by mode (e.g typically after 30 minutes )

mobifinder®4 3G also detects a special 3G mode, the RF Power regulation.
For this reason the mobifinder®4 UMTS alarms discontinuously in contrast to mobifinder®5 GSM/LTE.

Main application areas

In prisons
In military security areas
In other security areas of concern

Properties and functions of mobifinder®4 3G:

mobifinder®4 3G is able to cover a wide range.
Free field tests showed a maximum detection distance of 30 meters in 3G (UMTS1900) mode. The detection distance in buildings is restricted, especially if the walls consist of ferroconcrete. Typical values in this case are around 10 meters. With the service key the detection trigger level can be set in the range 12…90dB.
mobifinder®4 3G analyses the specific signal structure of mobile phones. Thus the likelihood of an unwanted alarm generated by other electronic devices is minimal.
mobifinder®4 3G works with a black box recording function. Received signals are stored successively up to200 alarms together with time-stamps. This makes it possible to protocol all mobile phone activities in order to analyze the information at a later date

Main functions of mobifinder®4 3G

mobifinder®4 3G detects only mobile phones working in 3G (UMTS) mode.
mobifinder®4 3G should always be used together with mobifinder5 for LTE(4G), GSM900 & GSM1800, because mobile phones often switch between 3G and 4G modes.

Use of mobifinder®4 3G

mobifinder®4 3G is small and handy. Users may clip the mobifinder together with mobifinder®5 (4G) to their clothes.
A clip fastener has been designed so that it can be worn on the breast pocket or belt.
Simple menu-driven parameters setting
LED and LCD indicators are arranged so that signals can not go unnoticed.
An acoustic signal with adjustable volume can, if required, be switched off.
An in-built vibrator mechanism enables the alarm to be transmitted silently.
A 6-digit identification number can be selected by users to identify series of measurements.
mobifinder®4 3G is battery-powered. Battery life is up to 120 hours (battery type AAA alkaline) using the “power on” mode. Battery may be changed without loss of data. Battery capacity is shown in three levels.
Battery life is up to 60 hours (Battery type AAA NiMH 1450mAh) using the “power on” mode.
mobifinder®4 3G has a black box type of recording function. Received signals are successively stored together with a time-stamp. This makes it possible to protocol all mobile phone activities in order to analyse the information at a later date.

Technical Data

Portable case equipment
Weight: 80g (with batteries)
Dimensions (mm): 61 x 52 x 20
3 buttons for setting and acknowledgement mode
Loudspeaker for acoustic alarm
Red LED for visual signaling
Vibration mechanism for silent alarm