... DFZK Automatically adjust electric valve controllerSummarizes:DFZK controller is automatically valve controller,with the outside or 4~20mA control ... -load capacity ≥250Ω4,Working environment Environment Humidity -10~+40°CResistance Humidity ≤80% (20°C±5°C)Around ... on the system to automatically adjustFeatures1,Opening, input, digital display, automatic setting zero full degree. Valve opening, ...