Please note the options are without backlight (PH111), with backlight (PH111BL), and probe only (PH111P).

Probe only type does not have pH meter.

The 5 in 1 meter is an economically priced, reliable pH meter (aka pH pen or pH tester) that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water, boilers and more.

The PH-80 measures PH,TDS,TEMP,EC,Salinity . Features include Supports 3-point calibration automatic identification ,water resistant body, simultaneous temperature display, sleek, a large LCD display, Automatic Temperature Compensation (ATC), data-hold function and low-battery indicator.

Measures pH , Temperature ,TDS,EC,Salinity

Calibration Conductivity EC: Supports 3-point calibration automatic identification (1413us 12.88ms and 111.8ms) with 3 calibration points (1413uS/cm 12.88mS/CM 111.8mS/CM) pH: 1 point (6.86) or 2 points (6.86 4.00) ) (6.86 9.18) or 3 points (6.86 4.00 9.18) can automatically identify the calibration solution

Waterproof rating: IP67

Large LCD display

Automatic Temperature Compensation (ATC)

data-hold function and low-battery indicator

Power consumption 2.9 mA, power consumption is 0

The accuracy within 150ppt is relatively accurate, and the deviation above 160ppt is large.

Automatic shutdown :5 minutes

1.this item comes without retail box