Automatic pH and Nutrient Doser      $387

Unit designed to monitor EC or ppm and pH continuously . Will also turn the pumps on if the readings exceed the set value. User can reverse the set points for High or Low control of the pH and EC values via the sketch.  Fully programmable. Sketch provided

Power : 90-220VAC 50/60HZ 

EC range: 0-5000 micro S/cm or 0-3200 ppm or 0-5 EC. With +/- 2% error.

pH  : 0-14pH

Conductivity sensor : 2 electrode with temperature compensation. 4 ft cable .

pH sensor . Double junction with 4 ft cable..

Set points : User programmable HIGH or LOW.  PH UP/DOWN, EC UP/DOWN.

Calibration: User adjustable  trim pots.

Peristaltic pump:12vdc . 0-100ml per min. Tube ID: 2.5mm OD : 4.7mm.

Enclosure :  ABS wall mount.

Manual