LM35 is a precision temperature sensor with its output proportional to the temperature (in oC). With LM35, temperature can be measured more accurately than with a thermistor. It also possess low self heating and does not cause more than 0.1 oC temperature rise in still air.
The operating temperature range is from -55°C to 150°C. The output voltage varies by 10mV in response to ambient temperature,its scale factor is 0.01V/ oC.