2103Ci CDMA Cellular Modem Module ​

Wireless flow data retrieval and alarms via CDMA; 1xRTT compatible

2103Ci CDMA Cellular Modem ModuleThis cellular modem module is designed to push Teledyne ISCO 2100 Series flowmeter data to a remote Flowlink® database. Data can also be downloaded from the server using an internet connection. The 2103Ci modem module uses Serial Over Internet Protocol (SOIP), so a landline modem is not required. 

This ability virtually eliminates the need for routine site visits, time-consuming (and potentially dangerous) confined space entry, as well as costly installation of land lines. 

Pushed-data capability

The 2103Ci can automatically send data via the internet to a designated server running Teledyne ISCO Flowlink Pro software​, using economical 1xRTT 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 on your server 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
Teledyne Isco 2103Ci CDMA Cellular Modem Module DatasheetDatasheet
Cell Antenna PlacementInstruction Sheet
2103 CiGi Cellular Modem Module Safety and Certification SheetSafety and Certification Sheet
2103-2105 Firmware Switch to Non-Verizon ServiceUser Manual
LTE Cell Service Activation 2100 Series ModulesUser Manual


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​2103Ci Cellular CDMA 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 via SMS & server
  • Resistance to lightning damage
  • Service coverage for most of North America
  • 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.


  • 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.)
  • Flowlink software