Modular 915MHz comms

This WEMS module provides 915MHz wireless connectivity to the module cluster, and supports hopping to extend the network range. Use of this frequency is permitted in the North American markets.



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


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 0.370W max



RF frequency 902-928MHz

RF output power 1dBm max (note: -1dBm ERP max)

RF output 1dBm max (note: -1dBm ERP max)

RF sensitivity -110dBm

RF bandwidth 25kHz (Narrow band)

RF channels 51

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 63g (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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