Mobile Phone Security Monitor


WatchHound Mobile Phone Security MonitorWatchHound™ Mobile Phone Security Monitor continuously scans any mobile phone prohibited area for wireless activity essentially creating wireless-free zones withouth the need for jamming.  All incoming and outgoing mobile calls are detected (in active or standby mode*) and time stamped for later analysis.  The award-winning* WatchHound receiver can also be configured to look like a common thermostat on any wall for more covert enforcement and features an ultra-crisp OLED display, remote control and utilises Power (PoE) over Ethernet or from the included AC power supply.  Audible alerts are relayed over the internal speaker, headphone output or create a customer alert to be triggered via the dry contact port.  WatchHound’s simple thumbstick/push button control allows any security personnel to easily set threshold levels, check past mobile phone activity and detect all voice, text and mobile data triggers in realtime.

If you desire a quote, please contact us at +44 (0) 2030 595777.




Technical Specifications

Frequently Asked Questions


WatchHound Main Body Pictures

                2011 Govies Platinum Winner * WatchHound™ is a 2011 Innovation Awards finalist, New Jersey Technical Council

                   and 2011 Security Products’ Govies Platinum Award winner.



●  European & U.S. multi-band receiver (Cellular, PCS, CDMA, GSM)

●  Continuously scans for mobile phone uplink activity

●  Bright OLED display

●  Networkable to multiple units to enforce a secure, wireless-free perimeter

●  Receiver design boasts a dynamic range of 60dB with user selectable sensitivity

●  Power (PoE) over Ethernet or Included AC power supply

●  Dry contact ports to trigger custom alerts

●  Time stamp of all mobile detection (using optional PC software)

●  USB port included to download recorded measurements to a PC for further analysis

●  User selectable mobile frequency bands allow the same unit to be used around the world;

     both European and USA mobile uplink bands are supported

●  User selectable sensitivity from -80 dBm to -50dBm with a resolution of 2dB for detection in a noisy


●  Simple, single push button/trackball operation

●  Designed and manufactured in the U.S.A.



* Standby mode (autonomous registration) varies from base station to base station with phones typically registering between once every few minutes to up to 20 minutes. This time varies greatly based upon carriers, distance from base stations and individual handset manufacturers’ standards.






Technical Specifications 

North American model PCS (1850-1910 MHz)CDMA (824-849 MHz)GSM (896-901 MHz)
European / Asian / Australian / New Zealand model WCDMA / UMTS (1920-1980 MHz) Europe, Asia, Korea, Japan, Australia, Brazil, New ZealandGSM 1800 (1710.2-1784.8 MHz) Europe, Aisa, JapanEGSM 900 (880-915 MHz) Europe, Asia, Australia, New Zealand
Radius of Coverage Area  100 feet (~30 meters) under typical conditions
Dynamic Range 60 dB
Sensitivity -80 dBm (with zero input attenuation)
Detector Resolution 2 dB
Bandwidth Resolution 4 MHz
Selectivity Rejection >50 dB @ 1 MHz from uplink band edges
Antennas Supported Optional Direction finding (field-swappable multiband panel antenna with SMA connector)Included Omni-directional (quarter-wave multiband, monopolar antenna with SMA connector)Integral/Covert (optional quarter-wave, multi-band, monopole connected internally,10 dBi gain)
RF Input SMA jack for external antenna
Mini-USB Port Mini-USB jack for connecting to a PC
DC Power Input  DC jack for connecting to a supplied external AC power supplyOptional external 8000 mAh battery pack (hidden behind unit) for backup power also available
LAN Interface PoE-capable ethernet port
Dry Contact Port  Polarity insensitive, for triggering other devices
Audio Alert  Audio alert message via loudspeaker
Visual Alerts LCD screen, mini-trackball illumination (red or blue)
Tactile Inputs Compact, pushbutton trackball for versatile control
Weight Under 1lb. with omni-directional antenna (less than 2lb. (30 oz.) with directional antenna)
Integral Attenuator 0 to 30 dB, user-selectable via soft menu
Sensitivity Range -80 to -50 dBm, user-selectable via soft menu
Data Logging  Optional PC software
Frequency Bands Field-selectable via soft menu 3 different sets of international frequency bands (US and EU)
Frequency Identification Detects and displays cell phone uplink signal with a resolution of + 2 MHz


Frequently Asked Questions

Can the WatchHound be used to locate mobile phones?

No, because the WatchHound unit is deployed on a fixed wall, which precludes the possibility to “triangulate” the source of RF signals. By contrast, a hand-held mobile detector can locate mobile phones by taking two or more bearings (or, Lines of Position) of the source.


Can many WatchHound units be used to monitor a large area simultaneously ?

Yes, this is possible by deploying the WatchHound Application Software package which allows the user to monitor multiple WatchHound units fron a PC screen.


Can the WatchHound run out of power?

No, because the WatchHound does not use batteries, it derives its power either over a PoE Ethernet port or is powered by an AC adaptor. In addition, WatchHound can also include an external (hidden behind unit) optional 8000mAh battery pack


Can the WatchHound store data?

No because it does not have to, since it is networked over Ethernet.


What kind of antenna is used by the WatchHound?

The WatchHound can be deployed either by an Omnidirectional or Directional antenna. When deployed at large inner open spaces the Omnidirectional antenna would be used. When deployed in corridors or otherwise constricted spaces a Directional antenna could be more efficient.


Does the WatchHound provide audible or visual alerts ?

Yes, it will provide a voice alert as well as a visual alert on its LCD display.


Does the Watchhound Mobile Phone Monitor identify callers or their phone numbers?

No. Watchhound Mobile Phone Monitor is a simple, low-cost scanning device that simply identifies and timestamps nearby mobile phone activity from a fixed point. It is a wireless tool used by security officers and personnel that require a NO WIRELESS security policy.


Can WatchHound track phone numbers or IMEI codes?

No, WatchHound only detects RF signals.


How far away can I detect mobile phones?

Typical range is about 100 feet but this varies depending upon the environment.


Does Watchhound Mobile Phone Detector detect phones that are powered off?

No. A phone that is turned off cannot be detected.


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