Description:

1. The working frequency of SIM800C is GSM/GPRS 850/900/1800/1900MHz, which can realize the transmission of voice, SMS and data information with low power consumption. The size of SIM800C is 17.6 * 15.7 * 2.3 mm, which can be suitable for various compact product design requirements.

Main features:

1. SMS
2. FTP/HTTP, embedded TCP/UDP protocol
3. DTMF detection, USB interface
4. The power interface supports 5-26V voltage input, note that when the voltage is 5-9V, the power adapter current can provide no less than 2A; support lithium battery (3.6-4.2V)
5. The communication interface is a TTL level serial port. Fully compatible with other 5V, 3.3V, 2.85V systems
6. You can choose to use the hardware serial port (D0 D1) or the software serial port (D7 D8) through the jumper cap
7. Support MICRO SIMCARD
8. Support four-segment headphone jack (type I)
9. Support to update SIM800C firmware via USB or serial port
10. On-board TVS tube, SIM card protection IC, two 100UF tantalum capacitors and other methods make the performance of the development board stable.