I have made an RPM datalogger using Arduino that stores RPM-data on an SD card. I have intefaced LCD with arduino (used 6 digital pins of arduino), an RTC (DS3231,used 2 analog pins), SD card slot(4 digital pins) and an Reflective sensor(1 digital pin). Thus, using a total of 11 digital pins, 2 analog pins, Vcc , 3.3V and Gnd pin.I have applied 12V to arduino through barrel pin. I have put my module in an industry at temperature around 40C.
I want to know the lifetime of Arduino.
Till how many years it can work safely ?