WatchHound Mobile Phone Detection Monitor

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WatchHound™ Mobile Phone Security Monitor continuously scans any mobile phone prohibited area for wireless activity essentially creating wireless-free zones without the need for jamming. All incoming and outgoing cellular calls are detected (in active or standby mode*) and time stamped for later analysis.

Product Description

This highly sensitive mobile phone detection monitor is discreet while it monitors 24-7 perimeter security for all nearby mobile phone activity.  WatchHound features audible and visible alerts.  It also connects to any ethernet for networked security monitoring throughout an entire facility.   This award-winning* TSCM receiver 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 custom alert to be triggered via the dry contact port.  For more intense security alerts, consider WallHound to detect and also deter visitors and staff from using any mobile phones or bluetooth.  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 cellular data triggers in realtime.


  • Detect all mobile phone (U.S & International bands) perimeter activity
  • Multiple WatchHounds can be networked together
  • Audible alert with flashing OLED display
  • Fully configurable from WatchHound interface
  • Power (PoE) over ethernet or included AC power supply
  • Dry contact ports to trigger custom external alerts
  • Simple, push button/trackball navigation
  • Designed & manufactured in the USA

*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.
*WatchHound ships to that region as the default but may be switched to other supported regions at anytime by the user using the included utility software.



Technical Specs

North American modelPCS (1850-1910 MHz)CDMA (824-849 MHz)

GSM (896-901 MHz)

European / Asian / Australian / New Zealand modelWCDMA / UMTS (1920-1980 MHz) Europe, Asia, Korea, Japan, Australia, Brazil, New ZealandGSM 1800 (1710.2-1784.8 MHz) Europe, Aisa, Japan

EGSM 900 (880-915 MHz) Europe, Asia, Australia, New Zealand

Radius of Coverage Area100 feet (~30 meters) under typical conditions
Dynamic Range60 dB
Sensitivity-80 dBm (with zero input attenuation)
Detector Resolution2 dB
Bandwidth Resolution4 MHz
Selectivity Rejection>50 dB @ 1 MHz from uplink band edges
Antennas SupportedOptional 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 InputSMA jack for external antenna
Mini-USB PortMini-USB jack for connecting to a PC
DC Power InputDC jack for connecting to a supplied external AC power supplyOptional external 8000 mAh battery pack (hidden behind unit) for backup power also available
LAN InterfacePoE-capable ethernet port
Dry Contact PortPolarity insensitive, for triggering other devices
Audio AlertAudio alert message via loudspeaker
Visual AlertsLCD screen, mini-trackball illumination (red or blue)
Tactile InputsCompact, pushbutton trackball for versatile control
WeightUnder 1lb. with omni-directional antenna (less than 2lb. (30 oz.) with directional antenna)
Integral Attenuator0 to 30 dB, user-selectable via soft menu
Sensitivity Range-80 to -50 dBm, user-selectable via soft menu
Data LoggingOptional PC software
Frequency BandsField-selectable via soft menu 3 different sets of international frequency bands (US and EU)
Frequency IdentificationDetects and displays cell phone uplink signal with a resolution of + 2 MHz


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 from 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 cellphones?

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 but Manta Ray and SentryHound both detect phones ON or OFF even with the battery removed.

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