Low cost GSM/GPRS modules for purchase in India

1) Simcom SIM900A :

SIMCOM manufactured SIM900A is a very low cost GSM/GPRS module used widely in India for cost sensitive applications.

Features :

Dual-Band 900/ 1800 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: 24*24*3 mm
Weight: 3.4g
Control via AT commands (GSM 07.07, 07.05 and SIMCOM enhanced AT Commands)
Supply voltage range: 3.1-4.8V
Low power consumption: 1.5mA(sleep mode)
Operation temperature: -40° C to +85°C

SIM900A is available for purchase in India

@ Complete board with all interfaces Amazon India at Rs.1024/-

TTL version is also available at Amazon at Rs.1650/-

with RS232 version at Amazon at Rs.1199/-

@ Rhydolabz India at Rs.680/- each

@ Digibay India at Rs.899/- each

With TTL breakout board @ NSK Electronics at Rs.1,200/- each

With TTL breakout board @ Probots at Rs.1,200/- each

With RS232 interface @ NSK Electronics at Rs.1,500/- each

With RS232 interface @ Rhydolabz India at Rs.1,909/- each

With RS232 interface @ OnlineTPS at Rs.1,942/- each

2) Neoway M660 :

This is a very easy to use low cost GSM/GPRS module which i came across while designing a GPRS data logger product for my client. It has very big pins and easily hand solderable. It has got a very programmer friendly set of AT commands in which i was able to connect to GPRS using only three commands remaining commands are the same as SIM900A AT command set.

Features :

Quad-band：850/ 900/ 1800/ 1900 MHz
Supports TCP/ UDP/ FTP/ DNS
TCP procotol stack support client mode, server mode, mix mode
Multi-channe link
Product certifications: CMIIT, CE, FCC
Dimensions 22.0 * 18.4 * 2.8 mm
Sensitivity -107 dBm
Instantaneous current Max 1.8 A
Operation current < 250 mA
Standby current < 2.0 mA
Operating temperature : -40~+85℃
Operation voltage : 3.5~4.3V, 3.9 V recommended
Packaging 28-pin LCC package

M660 module is available for purchase at ecomsolutions.in for Rs. 500/-

3) Neoway M600A :

M660A is a newer version of the M660A module with a price tag much lower than M660 targeted to compete with Simcom counterpart SIM900A in Indian market. M660A is a GSM/GPRS industrial wireless module that supports EDGE-Rx. With the ability to support Voice, SMS, and Data Services, It is widely used in Industrial and Consumer Devices as a drop in replacement for SIM900A.

Features :

Dual-band:900/1800M or 850/1900M
High reliability:Special EMI/EMC design, still as steady as a mountain with bad electromagnetic environment
Support various protocols:
TCP/UDP/FTP/DNS/HTTP
TCP procotol stack support client mode / server mode / mix mode
Multi-channe link
Certificate: CMIIT, CE

Product specification:

Sensitivity : – 106dBm
Instantaneous current : Max 1.8A
Operation current :<300mA
Standby current : 1.5mA
Operation temperature : -30?~+70?
Operation voltage :3.5V~4.3V(recommended value3.9V)
Connector :68Pin soldering-pan connector LLC

Neoway M660A is available for purchase in India at ecomsolutions for Rs.400/- each

4) Simcom SIM900 :

Although SIM900 does not fit in the article for low cost modules, I am including it anyhow if someone finds the links useful. SIM900A is the stripped down version of SIM900 and its the SIM900 that includes a whole lot of features as below,

Features :