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  • Part No :
  • GSM-1936
  • Availability:
  • In Stock
  • Shipping :
  • Same Day*
  • Weight:
  • 0.2Kg
  • Made By:
  • rhydoLABZ
  • Mfr.Part.No:
  • GSM-1936
  • Quality Rank:
  • 100/100
Rs 1999
(Excluding GST.)
Rs 2359
(Including GST)
2359 New In Stock
  • Buy & earn 200  reward points
  • GST Invoice & Input Credit Available
Quantity :
Description: The GSM/GPRS TTL UART Modem, from rhydoLABZ, is built with Quad Band GSM/GPRS engine- SIM900, works on frequencies  850/ 900/ 1800/ 1900 MHz. The Modem is coming with selectable interfacing voltage,which allows you to connect 5V & 3V3 microcontroller directly without any level conversion chips. The baud rate is configurable from 9600-115200 through AT command. The GSM/GPRS Modem is having internal TCP/IP stack to enable you to connect with internet via GPRS. It is suitable for SMS, Voice as well as DATA transfer application in M2M interface. SIM900 is a quad band modem, being able to operate in 850,900,1800,1900 MHz bands it is apt for world wide compliance.

NOTE: rhydoLABZ wiki has extensive contents showing you how to get started, how to configure the GSM/GPRS Modem-RS232 Modem and other details such as pinout, schematic etc. Kindly visit our wiki page for any reference.

The Modem is manufactured with Automatic Pick and place machine with high quality standard.The onboard Low dropout 3A Power supply allows you to connect wide range unregulated power supply (5V-12V)  . Using this modem,you can make audio calls, SMS, Read SMS, attend the incoming calls and internet ect through simple AT commands.

Modem Features:
  • High Quality Product (Not hobby grade)
  • Quad-Band GSM/GPRS  850/ 900/ 1800/ 1900 MHz 
  • 3V3 & 5V  interface for direct communication with MCU kit
  • Configurable baud rate
  • SMA connector with GSM Antenna.
  • SIM Card holder.
  • Built in Network Status LED 
  • Inbuilt Powerful TCP/IP protocol stack for internet data transfer over GPRS.
  • Audio interface Connector
  • Normal operation temperature: -20 °C to +55 °C
  • Input Voltage: 5V-12V DC
SIM900 General Specification:
  • Quad-Band 850/ 900/ 1800/ 1900 MHz
  • GPRS multi-slot class 10/8
  • GPRS mobile station class B
  • Compliant to GSM phase 2/2+
    • Class 4 (2 W @ 900 MHz)
    • Class 1 (1 W @ 1800MHz)
  • Dimensions: 24x24x3mm
  • Weight: 3.4g
  • Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands)
  • SIM application toolkit
  • Supply voltage range : 3.4V to 4.5V
  • Low power consumption: 1.0mA(sleep mode)
  • Operation temperature: -40°C to +85 °C
Modem Specifications:
  • Fax: Group 3, Class 1
  • Data
    • GPRS class 10: max. 85.6 kbps (downlink)
    • PBCCH support
    • Coding schemes CS 1, 2, 3, 4
    • CSD up to 14.4 kbps
    • USSD
    • Non transparent mode
    • PPP-stack
  • SMS
    • Point to point MO and MT
    • SMS cell broadcast
    • Text and PDU mode
  • Voice
    • Tricodec
      • Half rate (HR)
      • Full rate (FR)
      • Enhanced Full rate (EFR)
    • Hands-free operation (Echo suppression)
    • AMR
      • Half rate (HR)
      • Full rate (FR)
  • Firmware Support
    • FOTA
    • MMS
    • Java (cooperate with Iasolution)
    • Embedded AT
  • Other features
    • 0710 MUX protocol
    • Embedded TCP/UDP protocol
    • FTP/HTTP
  • Interfaces
    • Interface to external SIM 3V/ 1.8V
    • Analog audio interface
    • RTC backup
    • SPI interface (option)
    • Serial interface
    • Antenna pad
    • I2C
    • GPIO
    • PWM
    • ADC
  • Compatibility: AT cellular command interface
  • Certificates
    • CE
    • FCC
    • ROHS
    • PTCRB
    • GCF
    • IC
    • ICASA
    • REACH
Package includes:
  • 1x Fully Assembled and Tested GSM Modem with antenna.
  • 1x 2 Pin Female RMC connector (2mm)
  • 1x 4 Pin Female RMC connector (2mm)
  • 1x 8 Pin Female RMC connector (2mm)


Sort by: Recently  /  Helpful Write review

Am impressed

By Alex Mason from Oklahoma, United States on April 26, 2016
Am really impressed.
low cost.
packed with features.
good tutorials.
4 of 6 people found this review helpful
Was this review helpful to you?   Yes   No
    • Q
    • Can GSM/GPRS TTL UART Modem be connected inside our Desktop on PCMCIA slot.

      asked by Sameer Kolhe on June 02, 2017
    • A
    • GSM/GPRS TTL UART Modem cannot be connected on the PCMCIA slot.You can access the modem using a RS232 or TTL logic to your system.

    • Q
    • Is it support 3g or 4g internet in India?

      asked by Kamal Sharma on April 30, 2018
    • A
    • GSM/GPRS TTL UART MODEM-SIM900 supports only 2G speed.

    • Q
    • How to interface with system?

      asked by Sreeshma on August 23, 2019
    • A
    • Please find the wiki link shown below , for the same which definitely will shed light on this regard.

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