Elprico Development Board Kit, Module Kit with Quad-Band 850/900/1800/1900 MHz, USB Connectivity, 802.11G Wireless Standard, Includes Module & GSM Antenna

• 【Baud Rate】- The best baud rate for GPRS Shield communication is 19200 BPS 8-n-1 (GPRS Shield automatically matches baud rate by default).
• 【Feature】- RTC supported; Selectable serial port; With speaker and Headphone jacks; Low power consumption: 1.5mA(sleep mode)
• 【Control via AT commands】- Standard Commands: GSM 07.07 & 07.05 | Enhanced Commands: SIMCOM AT Commands.
• 【Embedded UDP stack】- allows you to upload data to a web server.
• 【Four Frequency Range】- Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world.

Features: Computer debugging USB--TTL. This module is powered by: 5V-26V, 5V 2A power supply is recommended. After plugging in the motherboard, the power supply must be able to supply 2A. The reason is that the GPRS Shield startup current and the maximum top current required to work up to 2A, but the USB port can not provide such a large current, so the external power supply equipment must be provided. The other power supply port leads to the 3.7--4.5V power supply for lithium battery power supply. The serial port is perfectly compatible. The TTL serial port is compatible with 3.3 and 5V microcontrollers. Make sure your SIM card is not locked. The best baud rate for GPRS Shield communication is 19200 BPS 8-n-1 (GPRS Shield automatically matches baud rate by default). Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world. 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). Control via AT commands - Standard Commands: GSM 07.07 & 07.05 | Enhanced Commands: SIMCOM AT Commands. Short Message Service - so that you can send small amounts of data over the network (ASCII or raw hexadecimal). Embedded UDP stack - allows you to upload data to a web server. RTC supported. Selectable serial port. Speaker and Headphone jacks. Low power consumption - 1.5mA(sleep mode). Specification: Power Supply:5~26V Four Frequency Range:850/900/1800 / 1900 MHz Working Temperature:-40~85℃ Package List: 1 x Module 1 x GSM Antenna