Features: Hold function to save measured values, large digital display for easy reading and recording. Auto power off function, automatically shut down after not in use to save battery power. 3-second quick test, multiple calibration algorithms, alloy precision probe, more accurate measurement. Wide range of applications, can be used in water purifiers and filters, food (vegetables, fruits) and beverage quality monitoring, swimming pools and spas, aquariums, hydroponics. Made of high-quality ABS plastic material, strong acid resistance, high pressure resistance, heat resistance, flame retardant, 2 battery compartments with outer buckle design, it is more convenient to replace the battery. Specification: Material: ABS+electronic components Size: 6.02*1.14in/15.3*2.9cm Color: as picture shown Package Includes: 1pc Notes: Please allow minor errors due to manual measurement. The colors may be a little difference for the different monitor display.