7-channel RTD Input Module. The I-87015W is a 7-channel RTD input module that is used for measuring temperature using RTD. Each channel can be connected to different kinds of RTD sensor.The I-87015PW is specifically designed for long-distance RTD measurement, and features automatic compensation for three-wire RTD so that it can measure accurately regardless of the length of the wires. The I-87015PW offers 7 channels, each of which can be connecte..