< 1-channel
< Input Ex ia
< Mounting in Zone 2, Class I/Div.2 or in the safe area
< Input for frequency, counter, direction of rotation
< Digital input max. 400 Hz
< Positive or negative logic selectable
< Simulation mode for service operations (forcing)
< Line fault detection (LFD)
< Permanently self-monitoring
< Module can be exchanged under voltage