... , electronic semiconductor, chemical, pharmaceutical, etcFeatures:1.High impedance preamplifier, strong ability of anti-interference 2 ... alarm, 2 separate 220VAC/3A relay output6.Automatic temperature compensation from 0~100°CTechnical specifications: ... /220VAC,3@30VDC ohm7.Temperature compensation: Pt1000RTD, Automatic compensation range: 0~100°C8.Accuracy: 0. ... ph indicator controller with High Quality