Swarm M138 Modem

It transmits and receives bidirectional data through the satellite network. Designed to be embedded in a third-party IoT device. Data delivered via a REST API or Webhook to any cloud service.

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✦ Roof: Network of satellites covering 100% of the globe.
✦ Shipable: Easy integration for OEM solution development.
Remote monitoring: Collect data from anywhere without relying on 3G coverage.


✦ Dimensions 51.0 x 30.0 x 5.3 mm.
✦ Weight: 9.6 g.
✦ Sensors: Onboard GPS (lat/lon/alt).
✦ Data Rate: 1kbps.

Sleep mode: 3.3V, 80uA (maximum).
Receive mode: 3.3V, 26mA (typical), 40mA (maximum).
Transmission mode: 3.3V, 850mA (typical), 1000mA (maximum).

GPS, VHF radio with integrated T/R switch.
U.FL connectors for GPS and VHF antennas.
ARM Cortex-M4 processor.
Indicator LEDs.
Serial CMOS Interface UART.
3.3V GPIO.

Operational: -40 C to +85 C.
Storage: -40 C to +85 C.

Module Protocol
Data sent to the Modem must be formatted in a hex-ascii string.
NMEA-type two-letter commands are sent to a 3.3 V serial CMOS UART.

137-138 MHz (downlink).
148-150 MHz (uplink).

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