1.dc6-24v wide voltage power supply, can also facilitate the use of your system power supply. board of high-performance dc-dc power supply circuit, coupled with tvs protection, the stability of the system greatly improved.
2. support 3.3v/5v ttl level control, convenient and a variety of commonly used single-chip, such as arduino/51/stm32 and other communication modules separately listed tx/rx/gnd, use and convenience.
3. with a standard serial port, pc can be easily controlled or debugged. 4. with headphone and microphone interface, you can easily test gsm voice calls.
5. with sim card static protection chip, when the plug-in sim card to generate static protection. 6. all available sim800 pins are out to facilitate the development of various sim800 applications.
7. with rtc back-up battery. 8. with net_sta indicator, easy to view the current sim800 status. 9. board size 83mm * 54mm.
sim800 module is a GSM/GPRS module.
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