DESCRIPTION:

SIM800 development board module featuring: GSM, GPRS, MMS, SMS and Audio capabilities! 

FEATURES:

• Serial interface: TTL/USART serial support. 
• Antenna circuit: Three common antenna interfaces (SMA interface only soldered)
• Two way power interface: DC IN 5 v - 18 v DC power supply;3 v8 GND, 3.5-4.2 V power supply, suitable for lithium battery power supply applications.
• Audio interface: increased by 3.5 MM audio interface, easily implement voice calls, voice broadcast, etc.
• SIM booth: new mainstream type metal MICRO thrust booth, strong and durable.
• LED indicator light: onboard two LED indicators. Allows you to monitor module working condition.
• PCB show: each interface screen printing mark, convenient for secondary development, the design fully follow SIM800 / A hardware design manual.
• Antenna Included! 

SPECIFICATIONS:

• DC6-24v wide voltage power supply, can also be used with your system power supply. Board high-performance DC-DC power supply circuit, coupled with TVS protection, the system greatly improved the stability
• Support 3.3V / 5V TTL level control, convenient and a variety of commonly used single-chip, such as ARDUINO / 51 / STM32 and other communications
• The module lists TX / RX / GND separately, and is convenient for use
• With a standard serial interface, can be easily controlled by PC or debugging
• With headphone and microphone interface, can easily test the GSM voice call function
• With SIM card electrostatic protection chip, plug the SIM card when the static electricity generated protection
• All available SIM800 pins are available for easy development of various SIM800 applications
• With RTC backup battery
• With NET_STA indicator, easy to watch the current SIM800 state.
• Board size 83mm * 54mm