Siemens TC35i Cinterion/Siemens TC35i Terminal
GSM modem with serial conn.

Cinterion TC35i (formerly Siemens TC35i) is a GSM modem terminal with serial connection (RS-232) and voice, data/fax, SMS capabilities.
Discontinued product - replaced by Cinterion MC55i.


Cinterion (ex-Siemens) Modem features

Basic GSM functions supported:

  • Siemens data/fax transmission/reception
  • SMS transmission/reception
  • voice calls
  • GSM dual band (900/1800 MHz)

Suitable for any kind of automation, M2M, remote control, telemetry, environmental monitoring, security, automotive applications.



TC35i kit with accessories This modem is provided either as stand-alone,
or as a kit equipped with the following accessories:

  • power supply 12/230V (EU plug)
  • GSM antenna vertical stick
  • RS-232 serial cable

Further accessories are available on demand.

A SIM card from a GSM mobile provider (not included) must be inserted into the modem.


 This product is RoHS & WEEE compliant.




  • SMS for your business

    - Working teams
    Contact your customers and mobile co-workers by SMS.
    - Mobile marketing
    Contact your audience with friendly SMS communication.

  • SMS for public services

    - Services and associations
    Contact service subscribers and associates by SMS.
    - Commercial consultants
    Remind fiscal deadlines to your customers with an SMS.
    - Medical offices
    Send appointment reminders to your patients by SMS.
    - Schools
    Keep in contact with parents and students by SMS.

  • Do more with SMS...


We'll be closed for holidays
from June 12 to 22, 2017.

Modem orders collected during this period will be delivered in the following workdays.

SMS software licenses will be released within 48 hours, even during this period.