SIMCOM SIM900S GSM/GPRS module * Dual-Band 900/ 1800MHz * 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: 40*33*3 mm * Weight: 7g

•Single-Band UMTS 2100MHz •Quad-Band GSM/GPRS/EDGE 850/900/1800/1900MHz •Dimension: 30 X 30X 2.9 mm •Weight: 5.0

I. Dual-Band 900/1800MHz; II. Dimensions: 24 * 21 * 3 mm

I. Dual-Band 900/1800 MHz; II. Dimensions: 26* 26 * 3 mm