You will find that this PLC I/O module carries the well known Allen Bradley signature.
Item Tag: SMC
SMC D-B54 SWITCH (AS PICTURED) UNMP
The ALLEN BRADLEY 1734-AENT integrates smoothly with ControlLogix and CompactLogix systems in many plants.
SI Device Net EX250-SDN1-X102 SMC DeviceNet Serial Interface Unit Module
A robust DIN rail latch on the 1734IB8S for secure mounting.
SMC EX600-DXPD Digital Input Serial Interface Unit
What stands out about the model 1756-IF16 is how cleanly it integrates with existing I/O chassis.