Input Voltage range of Arduino Uno

[Flamboyant]

Hi,

What is the input voltage range of Arduino Uno? I saw that to be 7-12V from the following link. Is it correct? I am planning to use it for making a Water Level Controller and my level sensor will give me 0-10V O/P.

http://build.simplelabs.co.in/content/arduino-uno

And also, will the Arduino has any model which can read 4-20mA input signal?

prak

[vishots.com]

The Arduino can only accept 0-5V input levels. If you want a higher input level, you will have to do some conditioning on the signal. Mainly use some sort of voltage divider circuit. The 4-20mA signal will have to be converted to a voltage. You will need to use a resistor and good ol' ohms law to do the conversion. I think a 250ohm resisitor will do it.