Telit LE51-868 S

Sigfox Star Network Module

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Key Features
  • Sigfox gateway
  • Frequency: 868-870 MHz
  • 2 Channels
  • Modulation: BPSK
  • 100bPS
  • Gateway to Sigfox base station
  • Broadcast 1.6 sec
  • ETSI: 140 messages of 12 bytes, per object day
  • Output Power 15dBm
  • Over the Air compatible
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LE51-868 S

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The LE51-868 S is a high performance certified short range to long range module designed to cover the 863-870 MHz band working with the Telit Proprietary protocol and acting as a SIGFOX gateway.

It has high value technical characteristics such as a -126dBm @ 600 bps sensitivity in Sigfox mode, ultra-low power consumption and up to 15.5dBm of output power. It is very easy to integrate, with small form factor and acts as a long range communication module connecting directly to SIGFOX network.



The “Star Network” protocol is dedicated point to point and star communications, with broadcast, smart repeater, addressed secured, IO copy functionalities. Ready to use and easy to handle (also usable for cable replacement) with Data encryption (AES128) available, Cyclic wake up( the module wakes up periodically and listens the radio link) and Download Over The Air (DOTA) features.


Networking: Short Range Network

  • Frequency 863 - 870 MHz
  • Channels: 2 to 89
  • Modulation: GFSK
  • Point to point, star network
  • ACK
  • Addressed Mode
  • Repeater Mode: bridge function
  • Listen before talk
  • Telemetry
  • Analog RSSI
  • Cyclic wake up
  • Remote CTS / RTS control
  • Hayes mode
  • I/O copy
  • Downlaod over-the-air
  • AES encryption

Optional Features

  • LE51-868S mode availble in Dip adapter and SMA connector

Data - LE51-868 S

  • Serial data rate: Up to 115.2 Kbps
  • Radie Data Rate
    • 2.4 kbps to 100 Kbps (Star Network)
    • 100 bps (Sigfox)



  • LGA mount technology, 30 pads
  • RF pad for antenna
  • 26 x 15 x 3 mm
  • Weight 1.7 g
  • Temperature: -40 to +86 deg C


  • Serial interface: RS232 TTL (Tx, Rx, Cts, RTS)

Electrical and Sensitivity

LE51-868 S

  • Output Power: Up to 15 dBm
  • Power Supply@ 2.0 - 3.6V
  • Baord Consumption at 3V
    • Rx 32mA
    • Tx 55mA
  • Std-by consumptions
    • External wake up (interrupt) 1uA
    • Standby (32.768 Khz on): < 2uA
  • Sensitivity (PER < 80%): -126dBm & 600 bps


  • LE51-868 S Front
    LE51-868 S Front
  • LE51-868 S
    LE51-868 S
  • LE70-868 Back
    LE70-868 Back