SAT100 Satellite Modem / RTUSAT100 Water Level RTU

The SCADALink SAT100 is a flexible low power satellite SCADA device that provides Modem, RTU, and Alarm Callout in a single device. It is designed for remote SCADA communications and monitoring to RS232/RS485 serial devices such as Flow Computers, RTU, PLC, Smart Transmitters and Power Meters inaccessible by terrestial communications. The SAT100’s low power draw makes it an ideal solution for many remote SCADA applications.

SAT100 Modem

  • Remote connectivity to serial devices such RTU, PLC, Flow Computers, and Data Loggers from the customers centralized SCADA application.
  • Satellite modem with 2 serial ports: COM0(RS-232) and COM1(RS-485).
  • Serial ports accessed as IP socket connections in IPMux or Virtual Serial Mode via the SatSCADA Server for SCADA communications.


  • 4 Integral I/O: AI/DI/D0
  • 2 Internal I/O Points: SAT100 Supply Voltage, SAT100 Board Temperature
  • External serially connected devices can be polled by the SAT100 Modbus Master using Modbus RTU protocol on COM0 (RS232) or COM1 (RS485) serial ports and mapped to the SAT100 Modbus Register Map.
  • RTU mode can be used to monitor integral I/O points and I/O points from external serial connected devices.
  • SAT100 concentrates all data in a single Modbus register map.

SAT100 Alarm Callout

  • SAT100 can be configured to generate callout messages on Alarm Conditions on configured tag points in the SAT100.
  • Alarm Callout Feature of the SAT100 can be utilized to provide Alarm Callout function from a single alarm point connected to integrated SAT100I/O to multiple Modbus registers polled from RTU/PLC at larger remote facilities.
  • When an Alarm Callout message is generated, all TAG point data is updated along with the TAG point that generated the alarm.
  • Callout Messages are sent from SAT100 to the SatSCADA Server where customers can interface from their SCADA Host via the SatSCADA Client using modbus or monitored using the SatSCADA Notifier to generate email or SMS notifications.

SAT100 works with SCADALink SatSCADA Server software to provide a complete end-to-end satellite networking solution, allowing SCADA Hosts to reach SAT100 terminals located anywhere in the world.

SatSCADA Server

  • SatSCADA acts as a network bridge to provide Customer SCADA Host with easy, secure access to remote SAT100 units.
  • Client provides secure Authenticated Access to Customer’s Terminal via HTTPS (No VPN required)
  • Server provides Monitoring and Alarm Notification function when a customer does not have or want to interface to their own SCADA Host system.
  • Server can be configured as Modbus Slave or Full Transparent Data Mode.


Main Benefits

  • Global coverage on Inmarsat geosynchronous satellite network
  • Low Power modes for solar or remote-powered applications
  • Multi-function device: modem/RTU/alarm callout all in one unit
  • Serial interface to PLC/RTU/EFM/Data Logger
  • 4 integral I/O (AI / DI / DO) for standalone or RTU operation
  • Modbus Master or Slave
  • SatSCADA Server provides Alarm Callout and full transparent datalink to remote devices
  • SatSCADA Client connects Customer SCADA Host to SAT100
  • Alarm Callout: Modbus interface and alarming on exception
  • Secure authenticated connectivity without VPN
  • Certified for hazardous location: Class I Div 2


  • Two way, near-real time messaging (up to10kbytes to the device, 6.4kbytes from the device)
  • Serial Communications: 1 RS-232, 1 RS-485 port
  • Broadcast to multiple SAT100 units
  • Rugged, customizable, environmentally-sealed terminals for Outdoor Installation
  • Low latency: <15 seconds for typical messages
  • Integrated GPS for location-based services
  • SAT100-IB inteface board for connecting to analog, digital and serial devices
  • SAT100 GUI: remote and local programmability

High Messaging Capability

  • Send and receive more data to allow better visibility of remote units
  • Communicate information to remote workers & assets where previously not affordable or available

Best Value

  • Equip fleets and asset groups of all sizes with competitive hardware and airtime pricing
  • Accurately budget communication costs without roaming charges

Robust and Reliable Service

  • Receive notification of events within seconds
  • Install customizable, environmentally-sealed terminals anywhere, even in harsh environments

SAT100 GUI enables remote and local configuration


SatSCADA Server


Inputs4 configurable integral I/O: AI / DI /DO, 2 Internal I/O: Voltage & Temp, GPS Position
Serial PortsOne RS232, One RS485
Power10 – 30 VDC
Temperature-40 to 85 degrees C
Size5″ x 5″ x 5″
TerminationsTerminal block connections for 12-24 AWG
CertificationCSA Class I Div 2

Satellite Communications

  • Satellite Service: Two-way, Inmarsat
  • Coverage: Global
  • From-Mobile Message: 6,400 bytes
  • To-Mobile Message: 10,000 bytes
  • Typical Latency: <15 sec, 100 bytes
  • Elevation Angle: -15° to +90°
  • Frequency Rx:1525.0 to 1559.0 MHz, Tx:1626.5 to 1660.5 MHz
  • EIRP: 5.0 dBW


  • Acquisition: Time Warm: 16 sec; Cold: 36 sec
  • Accuracy: 4m (CEP)
  • Sensitivity: Acquisition: -136 dBm, Tracking: -146 dBm


  • 460g


  • Dust & Water Ingress: IP67
  • Vibration: SAE J1455 (Sec fig 6-8), MIL-STD-81OG (Sec 514.6)
  • Shock: MIL-STD-81OG (Sec 516.6)
  • Load Dump Protection: SAE J1455 (Sec 4.13)


  • Satellite: Inmarsat Type Approved
  • Other: CE Mark, FCC, RoHS, Anatel


SatSCADA Web Interface

Login or preview SatSCADA page and demo.

The SatSCADA Web Client application provides cost effective, easy to use monitoring to clients for standard monitoring industrial applications.

The SatSCADA Web Client provides user access via a Web Browser on Desktops, Laptops or Smartphones. more about SatSCADA Technology

Users Access Laptop and Smartphone  Well Testing Trend View

The Web Client provides Site View, Tag View, Trend and Map Views, and is auto-configured based on the SAT1xx Terminal Configurations.

SatSCADA Web Client Map View   SatSCADA Web Client Site View   SatSCADA Web Client Tag View   Alarmcallout Trend View




The SAT100’s global coverage and low power operation makes it suitable for low power remote monitoring and control applications anywhere in the world.
Applications include:

Oil and Gas / Pipeline

Oil and Gas

Electrical Utilities and Power Generation


Remote Site Security

ATCO Trailer-Contanier-Filed Service
  • Remote Building
  • Container
  • Yard

Water Level Monitoring



Agriculture / Ranching

 livestock monitoring water system
  • Solar Pumps for Cattle
  • Cattle Trough Level

SAT100 Water Level RTU


















SCADALink SAT100 Datasheet




SAT100 Satellite RTU Systems

Complete and Ready to Install RTU Packages for Remote Monitoring and Control Systems.  Select required Airtime Package & Options.

ItemPart No.DescriptionNote
1SAT100 - KITSAT100 Satellite RTU Kit with TB-1 Termination Board B1 to be mounted in user supplied panelA
2SAT100 - RTU - DC - JBSAT100 Satellite RTU Kit with "6" x 6" x 6" NEMA4 Enclosure, 10-30 VDC Input, TB1 with 4 DIA
3ASAT100 - RTU - 12VDC SAT100 Satellite RTU Kit with 8" x 8" x 8" NEMA4X Fiberglas Enclosure, Quick Connect Wiring for 4 AI/Power
3BSAT100 - RTU - DC2DC SAT100 Satellite RTU Kit with 8" x 8" x 8" NEMA4X Fiberglas Enclosure, DC to DC , Quick Connect Wiring for 4 AI/PowerB
4SAT100 - GW - RTU -C
5SAT100 RTU - DC SAT100 Satellite RTU Kit with 18" x 16" x 10" NEMA4 Fiberglas Enclosure. 24VDC PowerD
6SAT100 RTU - AC - BKSAT100 Satellite RTU Kit with 20" x 20" x 10" NEMA4 Enclosure, 24VDC, 2A Power Supply with 1.3AH Battery BackupE
7SAT100 - SOL - RTU - 3012SAT100 Satellite RTU Kit with 18" x 16" x 10" NEMA4 Fiberglas Enclosure. 30W Solar, 37AH Battery, 12VDC PowerF
8SAT100 - SOL - RTU - 3024 SAT100 Satellite RTU Kit with 18" x 16" x 10" NEMA4 Fiberglas Enclosure. 30W Solar, 37AH Battery, 24VDC PowerF, G
9SAT100-SOL-5SAT100 Satellite RTU 14” x 12” x 6” NEMA4X with 5W Solar Panel


A. Package 2 used remotes sites where there is 10-30 VDC power available and up to 4 additional alarm contacts required.

B. Can include Optional DC to DC converter to generate 24VDC loop power required for 4-20ma Instruments.


D. Package 3 used for remote sites where 10-30 VDC Power source available. Room to add analog transmitter inputs, wireless sensors, and additional I/O, controllers.

E. Package 4 used for remote sites where AC line power is available. The system is 24VDC with integral battery backup.

F. Package 5 and 6 are for Remote Sites without Line Power. Additional solar panel and battery may be required for applications with additional instruments.

G. Includes DC to DC converter to generate 24VDC loop power required for 4-20ma Instruments.


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