Modular 868MHz wireless comms

This WEMS module provides 868MHz wireless connectivity to the module cluster, and supports hopping to extend the network range. Use of this frequency is permitted in the European markets and some other countries. There is the option to amplify the signal to achieve up to 2.5km range.



  • Pluggable, snap-fit modular system
  • High performance wireless narrowband operation
  • License-free use (ISM bands)
  • DIN rail mount


Temperature & humidity

Operating temperature range -10 to +50°C

Operating humidity <75% RH (Non condensing)

Storage temperature -20 to +85°C

Storage humidity <90% RH (non-condensing)

Cooling Convection



Supply voltage Modular bus powered

Current consumption 2.5W max



RF frequency 868-870MHz

RF output power 10dBm max (10mW)

RF frequency (high power) 869.400–869.650MHz

RF output 27dBm max (500mW)

RF sensitivity -108dBm

RF bandwidth 25kHz (Narrow band)

RF channels 80

RF antenna connector Female 50 OHM SMA (Sub-Miniature version A)

Antenna (recommended) 50 OHM quarter wave monopole with ground plane


Enclosure UL94-VO flame retardant PC, IP20 rated

Mounting 35mm DIN rail (EN 50022, BS 5584, DIN 46277-3)

MTBF (hours) 2,398,044


Weight & dimensions

Weight 74g (with 3 way connector)

Width 25mm

Height 98mm (without antenna)

Depth 58mm



EN 301 489: Electromagnet compatibility

EN 61000: Electromagnet compatibility


EN 60950: Information technology equipment

EN 60730: Automatic electrical controls

EN 50366: Domestic equipment


EU R&TTE directive for 25kHz

EN 300 220: EMC standard for short range devices

EN 301 489: EMC standard for radio equipment and services




Become a partner today

Becoming a partner and using our wireless I/O couldn’t be easier. To get started, just request a call back from our partner manager.

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