The Taylor Digital Recording Thermometer with Dual Glycol-Tolerant Probes is compact, accurate and easy to use, perfect for use in education and laboratory environments. This Fahrenheit/Celsius switchable thermometer has a temperature range of -40- to 221-degrees Fahrenheit/-40- to 105-degrees Celsius, and an accuracy of +/-1.8-degrees Fahrenheit at 20- to 212-degrees Fahrenheit or +/-3.6- degrees Fahrenheit at all other temperatures. The unit has a 96-hour memory to record up to 60 alarms per probe, and can be password protected for added security. The units LCD readout displays temperatures for each probe simultaneously and has a 0.1-degree Fahrenheit/Celsius resolution. Both 26-inch probes are glycol-tolerant for use with refrigeration systems. Requires two (2) AAA batteries (included).