Quad-band GSM/GPRS shield with SIM800C module and antenna for Arduino. Enables voice calls, SMS, and data transmission with low power consumption.

Chip: SIM800C Quad-band GSM/GPRS Frequency Bands: 850/900/1800/1900MHz Operating Voltage: 3.4V - 4.4V Module Dimensions: 17.6 x 15.7 x 2.3mm Interface: TTL, RS232 SIM Card Support: 1.8V and 3V Antenna Type: Finger antenna (included) Arduino Compatibility: UNO R3, Mega, and others Features: Voice, SMS, Data transmission Baud Rate: Configurable

