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SIM800C GSM GPRS Module 5V/3.3V TTL STM32 C51 with Bluetooth and TTS for Arduino

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(Such as the common 51 and the arduino is 5v, STM32 is the 3.3v). Supports MCU level: 5V / 3.3V for TTL logic. TXD: send pin serial port module, TTL level (not directly connected to RS232 level). RXD:...
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Item location:China
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