GSM Modem
GSM Modem SIM 300
- Uses SIM300 GSM module transmission.
- Operating Voltage: 7 – 15V AC or DC (board has onboard rectifier).
- Comes with an onboard wire antenna for better reception.
- Can be used for Data/Fax, GSM based Voice communications, TCP/IP stack, GPRS and SMS
- SIM300 allows an adjustable serial baud rate from 1200 to 115200 bps (9600 default).
- Provides RS232 interface for connection to computers and other devices.
- Lithium Battery holder
- Can add external antenna with SMA connectors.
- Power, RING and Network LEDs for easy debugging.
- Provides serial TTL interface for easy and direct interface to microcontrollers.
- Can be controlled through standard AT commands.
GSM Modem Sim900
- Quad-Band GSM/ 850/900/1800/1900MHz
- Voice Communication Port
- On-Board Voltage Regulator
- Power/Single LED indication
- SMA Connector for Antenna connection
- Compatible with Arduino, raspberry pi, arm, avr, pic, 8051
- Power Supply 12v 1amp to 2 amps max
- Use in the area of full signal strength.
- Perfectly suited for GSM-based Microcontroller Projects (better than SIM300 and other GSM Modems)
- Option for connecting MIC and SPEAKER directly to GSM MODEM for calls (LINE IN also available)
- Supports communication through RS232 with DB9 Connector, TTL Pins and I2C Pins
- CALL SMS GPRS facility - MIC input, LINE input and SPEAKER output pinsX