All PLC components such as AC/DC I/O, processors, racks and power supply modules are system tested for 24-36 hours in custom designed heat boxes at 125 degrees Fahrenheit to check for any thermally intermittent failures. Specially designed cyclic PLC programs have been written by K+S to ensure a consistent module operation and reliability. Over the years end users have been encountering the lack of sales and support from many OEM's with regards to obsolete PLC products. K+S has made a significant investment in supporting discontinued and obsolete PLC components. Not only can we rebuild your component back to OEM specifications, but we have "ready to ship" PLC module spares in our inventory. Common manufacturers repaired are: Allen Bradley, Modicon, GE, Texas Instruments, Reliance, Mitsubishi, Omron, Siemens, and Yaskawa.