Additional SR-516 features include: Show Mode Station Lockout via DMX, Emergency Bypass Relay, Retain previous Scenes from Power Off, Non-volatile Scene Memory, Mutually Exclusive Scene Grouping, Last Scene Recall, Record from Live DMX, 3 Configurable Contact Closures, 2 Gang Wall Box Installation. Visit our website at a www.lightronics.com or call 800-472-8541 for detailed information about the NEW SR-516 and what it can do for you. Let us be a part of your next Lighting Control Solution.