< 4-channel

< Inputs Ex ia, Outputs Ex ia

< Analog input, digital input,

analog output, digital output

< Mounting in Zone 2, Class I/Div.2 or in the safe area

< Supply circuit 15 V (20 mA)

< HART communication via field bus or service bus

< Simulation mode for service operations (forcing)

< Line fault detection (LFD): one LED per channel

< Permanently self-monitoring