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calling and message
Resistor 10KΩ
Coil and contacts:1500VAC/min
Electrical Specifications (Typical Values)
Digital I/O Pins: 14 (of which 6 provide PWM output)
RS232-TTL Converter v-slot calling and messageThis module is plug and play. It does not need driver. you can change RS232 levels to TTL level easily. Module has two lights which are receive indicator and transmit indicator. They will flash when receiving or sending data. How to test RS232 module Connect the module to computer serial port Use wire to make send and receive pins shorted Connect 3. 3V or 5V power supply between VCC and GND Open serial port debugging assistant on the computer and send
