The Seco-Larm ENFORCER Electric Door Strikes convert cylindrical locksets to an electronic access controlled locking system. They can be used on virtually any cylindrical door locking system. Use of a digital keypad ensures high security without the need for a key. Easily connects to SECO-LARM's SK-1011-SQ or SK-1311-SQ electronic keypads and is suitable for office-type applications. CE approved. TYPE: Fail-Secure, perfect for entrance door installations.