GSM SIM800C GPRS Modul 5V/3,3V TTL STM32 C51 mit Bluetooth & TTS für Arduino
3,58 €
(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: receive pin serial port module, TTL level (not directly connected to RS232 level).
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