I'm trying to connect an Arduino Uno with a BGT PM2510 sensor (which uses 7-12 V DC) by using a UART TTL to RS485 Two-way Converter.
The only thing I wonder about is: can the sensor damage the MCU?
According to the information on the 12 V sensor, it says:
Output signal: RS485 (Modbus protocol)
. I did measurements on the A & B ports of that sensor; the multimeter showed 3.3 V.
My question is, can the sensor damage the MCU? I intend to connect the Arduino and sensor as in the diagram below: