SIM800 pin to pin sim900a sim900 quad band gsm gprs module 1 GSM/GPRS Module 2 Quad-band 850/900/1800/1900MHz 3 tiny size of 24*24*3 mm 4 pin to pin SIM900 more cheaper

SIM900 GSM GPRS module Technology:Quad-Band 850/900/1800/1900MHz GSM/GPRS Dimensions:24*24*3mm NormalTemp:-40°C to +85 °C Weight: 3.4g

SIMCOM SIM900A GSM GPRS module

SIMCOM SIM900B GSM GPRS module Quad-Band 850/ 900/ 1800/ 1900 MHz Dimensions: 40*33*3 mm Operation temperature: -40 °C to +85 °C Weight: 7g

Multi-Band HSDPA/WCDMA/GSM/GPRS/EDGE module * Control Via AT Commands * Supply voltage range: 3.3V~ 4.2V * Operation temperature: -30 ℃ to +80 ℃ * Dimension: 36mm × 26mm × 4.7mm * Weight: 7g

SIMCOM SIM800H GSM/GPRS module •Quad-band 850/900/1800/1900MHz •GPRS multi-slot class 12/10 •GPRS mobile station class B •Compliant to GSM phase 2/2+ – Class 4 (2 W @ 850/900MHz) – Class 1 (1 W @ 1800/1900MHz) •Bluetooth: compliant with 3.0+EDR •FM: 76~109MHz worldwide bands with 50KHz tuning step •Dimensions: 15.8*17.8*2.4mm •Weight: 1.35g

SIMCOM SIM900D GSM GPRS module *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 @850/ 900 MHz) – Class 1 (1 W @ 1800/1900MHz) * Dimensions: 33*33*3mm * Weight: 6.2g

SIMCOM SIM900BE GSM GPRS module 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 (2W 850 / 900 MHz) Class 1 (1W 1800 / 1900 MHz) Dimensions: 40 x 33 x 3mm Weight: 7g