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
MTL Safe Fieldbus Barriers | Crouse-Hinds series | Eaton
MTL 7767+ MTL7700 range DIN-rail mounting safety barriers | BestgasTech