The hold button freezes the display to allow the user time to record readings. the CLR button restarts the evaluation of high and low values.

These thermometers display the current temperature along with the high and low extremes achieved during measurement.

For high accuracy, the Hanna Instruments-93551N features a CAL button to allow the operator a simple one-point calibration in an ice bath at 0°C when probe interchange occurs.

The instruments are equipped with BEPS (Battery Error Prevention System), which alerts the user in the event that low battery power could adversely affect readings.

• HOLD - hold function

• Battery indicator - battery life indicator at startup

• Waterproof - waterproof casing