Digital pH meter with a large LCD screen. It features indicators for measurement, stability, low battery voltage, and calibration. With automatic one or two-point calibration. Calibration fluids are automatically recognized and the values of the solutions are displayed on the screen.

It has an automatic shutdown that can be set to 8 or 60 minutes, to save battery power even if the instrument is left on.

The battery life of the Checker® Plus is long, lasting approximately 1000 hours. When the battery voltage is low, a relevant indication is displayed on the LCD screen.