Unitronics UCR-ST-B5 Quick Start Manual page 4

UCR-ST-B8
Input / Output Specification and Pinout
Associated Description
Pins
3 Digital Input 1, 0-40VDC (Low 0-5V, High 8-40V)
4 Digital Output 1, 0-30VDC, 300mA (sink)
Mounting
Use the Din Rail bracket to mount the device.
4 Unitronics