Series 75 Hand Controls: Offers thirty-six different two-hand control/remote operator station configurations to accommodate any application. All controls are ruggedly constructed to sustain years of use in the production environment and provide the highest level of reliability. Oil tight, all-steel enclosures and ring-guarded "RN\UN" buttons are standard throughout the line. No electrical logic is provided other than the contacts in the switches. PROTECH Series 75 two-hand controls are designed to interface with the 100-400 Series of press and machinery control panels. The Series 75 complement requirements for self-checking circuitry and control reliability.