Radiometrix Ltd

wsi imageoptim Radiometrix2
Radiometrix Ltd
Hartcran House
231 Kenton lane
HA3 8RP Harrow
United Kingdom
Phone: +44 (0)208 909 9595
Fax: +44 (0)208 909 2233
Contact: Ken Kangeyan


Founded in 1985, Radiometrix is the industry’s leading developer of off-the-shelf, licence-exempt miniature radio modules.

OEMs worldwide use Radiometrix’s UHF and VHF transmitters, receivers, transceivers and modems in a wide range of applications including, Industrial, EPOS, Security, Data-loggers, Environmental Monitoring, Automated Meter Reading (AMR) and Automotive electronics. New products include a wide range of narrow band multi-channel UHF & VHF modules, miniature OEM modems, Intelligent modules that are plug and play providing reliable wireless serial data links. Available on all major frequencies (169, 173, 433.92, 458, 868 & 916 MHz), we offer a wide variety of modules to suit most applications and offer custom design service. Radiometrix modules are RoHS compliant and have been certified for compliance with the R&TTE Directive by an independent Notified Body. Our comprehensive range of modules are available worldwide via our global distribution network, catalogue companies or directly from Radiometrix.

NEWS RELEASE February 2019:

Multi-channel transceiver from Radiometrix offers high vibration resistance

Designed to operate in environments with high levels of noise and vibration, the VX2M is a new NBFM 400MHz band transceiver from Radiometrix. Its sophisticated combination of circuit design techniques ensures the device is highly robust, with excellent resistance to vibration.

The VX2M meets the ETSI Category 1 high performance receiver specification, meaning that it can be used where the operation of a short range device may have inherent safety of human life implications.

Suitable applications include remote controls for industrial machinery or heavy vehicles, open cast mining, data loggers and industrial telemetry, as well as specialist fields such as close quarter weapons engagement training. 

The VX2M retains all the pin functions of its TR2M parent, including noise operated squelch / carrier detect and separate digital / analogue inputs and outputs. It also supports the same internal i1200 modem.

Conforming to the Radio Equipment Directive (RED), the device has a high performance double superhet, 128 channel PLL synthesizer with TCXO. It offers 23 channels in the 458MHz band and 69 channels in the 433MHz band, and any 3MHz band module from 400MHz to 475MHz is available as a factory tuned custom variant.

NEWS RELEASE January 2018:
Radiometrix HNM2

High power radio modem features Category 1 receiver

Radiometrix has launched a high power narrowband radio modem that provides an RF output of up to 500 mW with a data rate of up to 19200 bps. The HNM2 meets the ETSI EN 300 220-1 Category 1 specification for high performance receivers where a short range radio device may have inherent implications for the safety of human life.

This makes the multichannel, low power consumption device suitable for use in safety critical wireless applications such as social alarms and healthcare monitoring.

Current consumption is only 280 mA for transmit and 40 mA for receive, from a supply voltage of 6 V to 16 V dc. Providing a direct interface to SPI, USB, RS232 and RS485 serial ports, it measures only 80 mm x 86 mm x 15 mm. Power can be provided via the USB link or an external supply.

Offering point-to-point and point-to-multipoint communication, the frequency programmable HNM2 has a store and forward repeater mode using dual addressing to extend its operating range.

Other features include a range test mode, a SAW front end filter, 12.5 kHz / 25 kHz channel spacing, data whitening using a pseudo-random sequence, and a digital received signal strength indicator. 

The modem can be specified to operate on the licence exempt bands of 458 MHz in UK or 169 MHz and 869 MHz in the EU. Custom frequency bands are also available from 160 MHz to 915 MHz. Channel selection is made by means of a rotary hex switch or using AT commands.

As well as social alarms and healthcare monitoring, the HNM2 is suitable for IoT and other applications, including high end security and fire alarms, lone worker alarms, industrial / commercial telemetry and telecommand, in-building environmental monitoring and control, vehicle data up/download, and automatic meter reading.



Radio data logger