Monitor fluid temperature with AVTECH's Digital Fluid Temperature Sensor. This sensor provides real-time temperature values from -67 to 257 degrees Fahrenheit and/or -55 to 125 degrees Celsius when used with any Room Alert environment monitoring device. Accuracy is within +/- 2 C degrees. It's special sealed tube containing Propylene Glycol makes it an ideal sensor to monitor refrigerated items, tracking their temperature instead of the surrounding air temperature. AVTECH offers this sensor with cable lengths of 25', 50' and 100'.