PH-902A Pen pH Testr WP (ad110pH)
Range: 0.00—14.00 pH,
Temp. C: 5—50℃, (ATC)
Calibration: Two-point at 6.86pH and 4.01pH (or 7.0pH and 4.01pH)
Features: Automatic switch-off function: After 8-10 minutes without pushing buttons, the meter will be switched off automatically. Low battery: As long as there is any display, the accuracy is guaranteed.
Battery Life: DC 4x 1.5V