The Extech EA15 is a precision temperature data logger and dual-input thermometer that accepts a wide range of thermocouple types: J, K, E, T, R, S, and N. Its large backlit dual reading display can show [T1 and T2], [T1-T2 and T1], or [T1-T2 and T2], with temperatures displayed in °F, °C, or Kelvin (K).

With an impressive basic accuracy of ±0.05% (+1.5°F/+0.75°C) and 0.1° resolution, the EA15 is suitable for demanding measurement applications. The built-in data logger stores up to 8800 data sets, and an RS-232 port allows easy transfer of logged data to a PC for detailed analysis. A real-time clock ensures accurate time-stamping of measurements.

The timer function displays elapsed time and records the exact time when minimum and maximum readings occur. An offset key provides a zero function for relative measurements. Other features include Data Hold to freeze readings and auto power off to conserve battery life. The EA15 is an excellent tool for laboratories, quality assurance, and industrial process monitoring where high accuracy and data logging capability are required.