TELEDYNE ISCO 2103Gi GSM/GPRS Cellular Modem Module


Teledyne ISCO’s 2100 Series offers flexible, modular design and easy configuration for a wide range of networked open-channel flow monitoring applications, including Inflow and Infiltration studies, CMOM and AMP data collection, and river monitoring.
Compact, stackable, NEMA 4x, 6P (IP68) modules snap together to provide the capabilities needed for practically any site and monitoring requirement.


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


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​2103Gl GSM/GPRS Cellular Modem Module

Size (HxWxD):

2.9 x 10.5 x 7.5 in. (7.4 x 26.7 x 19 cm)


2.0 lbs. (0.9 kg)


NEMA 4X, 6P (IP68)


High-impact polystyrene


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)


NEMA 4X, 6P (IP67)


High-impact polystyrene


Two 6V alkaline lantern or lead-acid lantern


Alkaline – 25 Ahrs; Lead Acid – 5 Ahrs


TELEDYNE ISCO 2103 Ci/Gi Manual (PDF)