The dual-mode SS-81 provides customers with the advantage of global coverage and reduced operational costs by intelligently delivering data messages using lowest-cost message routing. It uses cellular frequencies when in range of terrestrial networks and seamlessly service in other areas. This ensures that assets moving anywhere in the world are easily reachable at all times.

The SS-81 works with the Find''Secure gateway to provide a single, easy-to-use interface to both GPRS/EDGE and IsatM2M networks. Our integrated approach ensures a high level of dependability, performance and satisfaction.


  • Fully-integrated satellite/cellular package eliminates integration and installation issues.Increase reliability while reducing integration and support costs.
  • Exception-based reporting based on time, distance, Geofence or other criteria reduces operating costs without sacrificing functionality.
  • Intelligent message routing increases reliability and lowers networking costs by automatically selecting which network to use.
  • Data Log maintains detailed information that can be extracted when convenient and cost-effective.
  • Low-profile Inmarsat/GPS antenna can be installed inconspicuously for security applications.
  • Over-the-air programming enables remote reconfiguration—anytime and anywhere
  • The SS-81 works with the Find''Secure gateway to provide a single, easy-to-use interface to both GPRS/EDGE and IsatM2M networks.
  • Inmarsat D+/IsatM2M Type Approved Satellite Certificate. PTCRB Approved. FCC, RoHS, IC pending, CE Mark (R&TTE), Anatel Regulatory Certified.

General Specification


Parameter Description
Size Transceiver: 155 x 124 x 41 mm
Satellite antenna: 127 x 93 x 23 mm
Mass Transceiver: ~244 g
Mass Satellite antenna: 379 g (with 5 m cable)


Parameter Description
Operating Temperature Transceiver: -30°C to +65°C
Antenna: -40°C to +85°C
Storage Temperature Transceiver and antennas: -40°C to +85°C
Humidity 95% Relative Humidity at +30°C non-condensing
Dust &Water Ingress Transceiver: IP40/NEMA1
Satellite antenna: IP67/NEMA-4X
Vibration 5-20 Hz; 1.92 m2/s3 random noise
20-500 Hz; -3dB octave random noise
Shock (survival) Half sine 6ms, 300 m/s2

Electrical Input Voltage

Parameter Description
Input Voltage 9 VDC to 32 VDC
Power Consumption
(typical @ 12VDC)
Transmit mode: 7.6W (satellite)
Tracking mode (GPS on, GPRS on): 1.5W
Sleep mode: 3.6mW
Mating Connector Transceiver I/O: JAE IL-AG5-30S-D3C1
Satellite Antenna: Fakra FAI-NARP-PCB-M
GPRS Antenna: SMA female

Satellite Communications

Parameter Description
Frequency Rx: 1525.0 to 1559.0 MHz
Tx: 1626.5 to 1660.5 MHz
EIRP 9 dBW max
Elevation Angle 0 to +90 degrees

GSM/GPRS Communications

Parameter Description
Frequency 850/900/1800/1900 MHz
GPRS data Class 12 multislot; Coding scheme 1 to 4
Class B mobile station; Full PBCCH support
Supports NMEA formatted output from GPS
Output Power Class 4 – 33dBm ± 2dB for EGSM 850/900
Class 1 – 30dBm ± 2dB for GSM 1800/1900
SIM Card 3.3 V SIM (Customer Supplied)

External Interfaces

Parameter Description
Serial Rs232: 1 console interface,
Supports optional NMEA output
Password-protected access
Analog/Digital Up to 18 software-configurable inputs or outputs 4 wake-up enabled

From-terminal Messaging

Parameter Description
IsatM2M Up to 25.5-byte payload
GPRS Up to 200-byte payload

To-Terminal Messaging

Parameter Description
IsatM2M 4 alert codes + Up to 100 bytes
GPRS Up to 200 bytes

Ordering Codes

Parameter Description
SM200235-GS5 SureLinx 8100 terminal
Side-mount satellite antenna (5m cable, Fakra)
GPRS antenna (2.5m cable, SMA)
SM200235-GM5 SureLinx 8100 terminal
Side/magnet-mount sat. antenna (5m cable, Fakra)
GPRS antenna (2.5m cable, SMA)
SM200235-GR5 SureLinx 8100 terminal Satellite antenna, bottom-mount SMA female 5m cable, Fakra to right-angle SMA GPRS antenna (2.5m cable, SMA)


Parameter Description
Channels 16 channels; 1575.42 MHz
Acquisition Cold-start 34s
SuperSense? : -148dBm
Accuracy 3 m CEP; 5 m SEP

Certifications & Compliance

Parameter Description
Satellite Inmarsat D+/IsatM2M Type Approval
Regulatory FCC, RoHS, IC pending, CE Mark (R&TTE), Anatel