Functionality

Digital inputs	8 (120 VAC / 230 VAC)
Digital outputs	4 relay outputs with one switch-over contact each
LED displays	For signal states, errors and supply voltage
Internal power supply	Through the expansion bus interface (I/O bus)
External power supply	Via the terminals ZP and UP (process voltage 24 VDC)
Required terminal units	TU531 or TU532 TU531 and TU532 for I/O Modules

The device is plugged on a terminal unit TU531 and TU532 for I/O Modules. Position the module properly and press until it locks in place. The terminal unit is either mounted on a DIN rail or to the wall using 2 screws plus the additional accessory for wall mounting (TA526 TA526 - Wall Mounting Accessory).