Functionality

Digital inputs	8 (24 V DC), can be used as source inputs or as sink inputs
Digital outputs	8 normally open relay outputs (24 V DC or 100-240 V AC, 2 A max.)
LED displays	For signal statuses
Internal power supply	Via I/O-Bus
External power supply	Via the terminal L+ (process voltage 24 V DC). The minus pole is provided by the I/O-Bus.