OSGGH234E1A is an Optosupply isolator module. It has two channels and is designed to provide reliable isolation of two signals from each other. It has an input isolation voltage of 2,500 Vrms and an output isolation voltage of 2,000 Vrms. The isolator also has a temperature range of -25 to 85 degrees Celsius, and supports a wide range of signal types, such as thermocouple, mV, voltage, current, RTD, and frequency signals.