Product DescriptionSeco-Larm Enforcer SK-1011-SDQ Access Keypad for Security and Access Control Applications. The SK-1011-SDQ is stainless steel, stores up to a 1050 unique 4-8 digit codes, 10,000 possible user code combinations, and integrates with most access control and security systems.The SK-1011-SDQ includes a relay that is perfect for electronic door strikes, door alarms, door chimes, alarm control panels, or other security and access control application for easy remote access.