Thermocouple Converter LB5105A, Occupied slots, LB (Zone 2, Class I/Div. 2), 4 channels, Inputs Ex ia, Mounting in Zone 2, Class I/Div.2 or in the safe area, Converter for thermocouples and mV-signals, Simulation mode for service operations (forcing), Line fault detection (LFD), Permanently self-monitoring