M91™ – For simple PLC control—with text-only HMI + keypad.

Finding a reliable, cost-effective PLC and HMI can be the hardest part of an otherwise simple automation project. Unitronics M91 series are here to make sure simple projects stay simple. These Programmable Logic Controllers have onboard I/O, built-in text-display HMIs, and complimentary software and technical support. Everything you need for a simple, self-contained automation project comes included with M91 All-in-One PLC at one affordable price.