Series MTL7706/7787 | Zener Barrier is intrinsically safe shunt-diode barrier that can be used to communicate with and provide isolations for transmitters approved for use in hazardous areas. | Dwyer Instruments
Intrinsically Safe Explosion proof Safety Barrier 4 20mA Switch Output Signal Converter|Instrument Parts & Accessories| - AliExpress
What is Intrinsically Safe? | Intrinsic Safety Explained