... Temperature compensation 4. Anjun ph indicator controller with High QualityApplicationIndustrial waste water,pure water, circulating water, ... dyeing, electronic semiconductor, chemical, pharmaceutical, etcFeatures:1.High impedance preamplifier, strong ability of anti-interference 2.Transmission ... 180~260VAC, 50/60HZ12.Dimension: 96*96*125mm13.N.W: 1 KG Anjun ph indicator controller with High Quality