Smart Professional pH/ORP controller * Manual 2 points calibration * Visual LED alarm * Works with 12 VDC adapter * 1 power plug for CO2 dosing and 1 power plug for ozone dosing * Double junction pH electrode (BNC connector) and platinum ORP electrode Specifications: Range 0.0 - 14.0 pH ± 1000 mV Resolution 0.1 pH ± 1 mV Accuracy ± 0.2 pH ± 5 mV Calibration Manual 2 points Set point range 5.5 - 9.5 pH 0 - 600 mV Alarm Active when reading is higher than set point for pH Active when reading is lower than set point for mV Dosing contact 1 power plug for CO2 dosing 1 power plug for ozone dosing Power supply 12 VDC adapter Electrode MA911B/2 and MA921B/2 Dimensions 80 x 145 x 35 mm