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SIM800C Development Board Module Support GSM GPRS 3.3/5V TTL Level Control DC 6-24V For Arduino 51 MCU STM32

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Product Introduction: 1.TTL level control interface,can directly connect with MCU serial port 5V/3.3V logic level or USB-TTL module computer for debugging 2.Logic level conversion circuit,automatically transform TTL level into 2.8V level 3.Microphone and earphone interface:used for testing voice communication 4.TTL level and RS232 serial port control switch short circuit cap 5.RS232 serial port interface:can connect with serial port wire and computer communication debugging 6.MAX3232 serial port conversion circuit 7.Vbat power supply interface,DC-DC stabilivolt output interface 8.DC power supply adapter input interface,we recommend you use 9V or 12V power supply input (at least 1A);since GSM module instant power consumption can be up to 2A (4V) 9.Power supply indicator lamp 10.Power supply switch 11.RTC battery 12.SIM800 kernal 13.SIM card socket 14.Signal indicator lamp 15.ESD protection chip 16.Module start key swtch 17.SIM800 kernal external expansion pin 18.SMA interface antenna 19.DC-DC switch power supply stabilibolt Basic Functions: 1.DC 6-24V power supply voltage:TVS protection,which will greatly enhance board’s stability 2.Support 3.3V/5V TTL level control,easy to communicate with various MCU,such as ARDUINO/51/STM32 3.Standard serial port interface,easy to be ccontrolled by PC or debugging 4.Earphone and microphone interface,convenient to test GSM voice communication 5.SIM card electrostatic protection chip 6.All available SIM800 pin lead out,easy to develop various SIM800 applications 7.RTC backup battery 8.NET_STA indicator lamp,easy to know SIM800 current state 9.Board Size:83*54mm

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Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).
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