2103 LTE/Gi Cellular Modem Module​

Retrieve flow data and receive alarms via your GSM wireless service; GPRS compatible

2103Gi GSM/GPRS Cellular Modem ModuleThis cellular modem module is designed to push Teledyne ISCO 2100 Series flowmeter data to a remote Flowlink® database. It virtually eliminates the need for recurring site visits, time-consuming (and potentially dangerous) confined space entry, as well as costly installation of land lines. 

The 2103Gi is compatible with user-subscribed GSM digital cell phone service (such as AT&T and T-Mobile). GSM subscription parameters are contained on a SIM card that you install in the modem. Service parameters – or provider – may be changed by simply replacing the SIM card. 

The 2103Gi stacks together with up to three other Teledyne ISCO 2100 Series flow modules​ of your choice, giving you a compact, integrated system for open channel flow data collection and management. 

Pushed-data capability

The 2103Gi can automatically send data via the Internet to a designated server running Teledyne ISCO Flowlink Pro software, using economical GPRS packet-switched data transmission. The user-specified primary data transmission interval (from 5 minutes to 24 hours) can automatically change to a secondary interval when specific conditions occur at the monitoring site. An Oracle® or Microsoft® SQL database is required to use this feature. Contact the factory for additional information.


When you purchase instruments from Teledyne ISCO, you not only receive innovative, high quality products, you also receive excellent customer service and product support. Your initial purchase is only the beginning of Teledyne ISCO's ongoing commitment to their customers.


2100 Series Flow Modules BrochureBrochure
Water and Wastewater Product GuideBrochure
Wasterwater Flow Monitoring and Control Case StudyCase Study
2103 LTE-Gi GSM Cellular Modem Module DatasheetDatasheet
Cell Antenna PlacementInstruction Sheet
2103 CiGi Cellular Modem Module Safety and Certification SheetSafety and Certification Sheet
2103 LTE-Gi Modem Module Install and OperationUser Manual
2103-2105 Firmware Switch to Non-Verizon ServiceUser Manual
LTE Cell Service Activation 2100 Series ModulesUser Manual


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​2103 LTE/Gi Cellular Modem Module

Size (HxWxD): 2.9 x 10.5 x 7.5 in. (7.4 x 26.7 x 19 cm)
Weight: 2.0 lbs. (0.9 kg)
Enclosure: NEMA 4X, 6P (IP68)
Material: High-impact polystyrene
Power: Provided by Teledyne Isco 2191 Battery Module
Operating temperature: -4° to 140°F (-20° to 60°C)
Storage temperature: -40° to 140°F (-40° to 60°C)
Setup and data retrieval: Via PC or compatible computer with Teledyne Isco Flowlink Software

2191 Battery Module

Size (H x W x D): 6.0 x 9.6 x 7.6 in. (15 x 24 x 19 cm)
Weight (w/o batteries): 3.2 lbs. (1.4 kg)
Enclosure: NEMA 4X, 6P (IP67)
Material: High-impact polystyrene
Batteries: Two 6V alkaline lantern or lead-acid lantern
Capacity: Alkaline - 25 Ahrs; Lead Acid - 5 Ahrs

​For a full list of product specifications, see the datasheet.​​



Standard Features

  • Automatic alarm messaging to pagers or cell phones – with GSM service on a SIM card
  • Communication coverage for any area with GSM cellular service
  • Easy setup and change of service provider by simply installing a SIM card
  • Resistance to lightning damage
  • IP68 enclosure rating (NEMA 4X, 6P)
  • Compatibility with Teledyne ISCO Flowlink Data Management Software, allowing sophisticated analysis, editing, graphing, reporting, and archiving.
  • Long battery life. Pre-set conditions automatically cause the modem to power up, but the user may program specific “on times” for communication, significantly extending battery life.
  • When used in pushed data mode, the modem automatically powers down once transmission is complete (until next transmission begins).


  • Remote data retrieval in sewer flow studies, I & I, CSO, CMOM
  • Automatic alarm notification of overflow condition

Options and Accessories

  • Magnetic mount antenna (For elevated placement to extend range and avoid signal obstruction, e.g., where module is inside a steel enclosure or steel-framed building.)
  • In-street (buried) antenna. (Potted antenna in PVC housing, designed to be buried in street for manhole sampling/monitoring applications.)
  • Flowlink software