8-channel Universal Analog Input Module with High Voltage Protection. I-87019RW features an extremely excellent protection mechanism where Overvoltage Protection is up to 240 Vrms. It has wider input range for voltage compared to I-87018R. I-87019RW measures voltage from +/- 15 mV ~ +/- 10 V. Its input type also includes current and thermocouple.An intuitive design is kept in this model; choosing to measure current or voltage is simply by a jumpe..