Features: Compact 1/16 DIN size fits into standard industry panel cutouts. Microprocessor based for fast, reliable and accurate measurements. Easy to calibrate by one keyboard. Degree ℃/℉ are switchable. The large backlight LCD display pH or Conductivity and Temperature simultaneously. Optional NEMA-4X gasketed lens cover fits over front bezel of controller-made of watertight corrosion resistant ABS plastic. Specifications:     pH ORP Temp Conductivity TDS Salt Temp Range -2~16.00 ±1000 mV 0~90.0 ℃ 0~2000μS 2.00~20.00 mS 0-1300 ppm 1.30~13.00 ppt 0~1000 ppm 1.00~10.00 ppt 0~90 ℃ Accuracy ±0.01+1 digit ±2+1 digit ±0.2+1 digit ±2% FS ±0.2+1 digit Resolution 0.01 pH 1 mV 0.1 ℃ 1 μS/0.01 mS 1 ppm/0.01 ppt 1 ppm/0.01 ppt   Power 9V DC  (AC adaptor) Panel cutout 1/16 DIN/1.77 x 1.77"(45 x 45 mm), Depth 4.2"(106 mm) Weight 70 g without NEMA-4X   Accessories for complete kit: pH, ORP electrode or Conductivity cell Temperature probe Standard solution DC/AC adaptor