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SentryRADTx provides a reliable, low cost solution to a wide range of wireless monitoring and alarm applications.

Offering a variety of sensors and mounting options (including the innovative inductive MAG) the ATEX approved SentryRAD range may be used to collect and wirelessly send data to SentryPSTN, SentryGSM2E, SentryGSM3D and RS485/232 units.


  • Tough flexible whip antenna
  • Inductive magnet antenna for manhole covers in underground installations.
  • ATEX approved
  • Programmable sample frequencies.
  • Waterproof

Sensors (typical)

  • LPG tank
  • Ultrasonic (oil, water etc.)
  • Pulse counter / tamper
  • 4 to 20 mA
  • VISY magneto restrictive


  • Radio: 434, 868, 916 MHz  frequencies
  • I.S. battery pack for hazardous area applications.
  • IP68 enclosure.


  • EN:50014:1997
  • EN50020:2002
  • R&TTE Directive 1999/5/EC
  • Low Voltage Directive EN60950
    CE-approved logo CE approved
    WEEE compliant logo WEEE compliant



User Defined Parameters

  • Sample rate
  • Transmission rate
  • Count offset (Mx)
  • I.D.


Already successfully integrated into client applications, the SentryRADTx, Mx and MAG offer a cost-effective solution to fuel storage and distribution companies, meter reading and data logging applications, and instrumentation, sensor and meter companies. Through our in-house application engineering and web hosting services, we can develop custom telemetry and data management solutions.


  • What is the maximum range? – Unobstructed line of sight is up to 1000 meters. In practice this will be reduced by walls and trees etc.
  • How long does the battery last? – That depends on the transmit rate, but 5 years is quite usual.
  • What is the MAG? – The MAG is a clever inductive antenna. It uses a property of radio to turn a manhole cover into a part of the transmitter, allowing underground use.
  • Is it easy to use and configure? – Yes, while usually shipped pre-configured and ready to go, changes are easily made in the field.
Remote Sensing, Monitoring & Metering

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