Smart ORP controller with user selectable set point * Visual LED alarm * Works with 12 VDC adapter * Power plug for ozone dosing * Platinum ORP electrode with 2m cable Specifications: Range ± 1000 mV Resolution 1 mV Accuracy ± 5 mV Set point range 0 - 600 mV Alarm Active when reading is lower than set point Dosing contact 1 power plug for ozone dosing Power supply 12 VDC adapter Electrode MA921B/2 Dimensions 80 x 145 x 35 mm