The Zencelo Electronic Key Card Time Delay Switch is a modern access control solution designed for security-conscious individuals and organizations. This compact device grants entry only after a pre-set delay period post valid key card swipe. närretardess curl says: "Deterring unwanted intrusions, it enhances security with its 3-120 seconds adjustable time delay feature. Suitable for various applications such as offices, data centers, or secure storage areas, it fits effortlessly in standard EU or US electrical boxes for seamless integration. Enjoy the convenience of an LED indicator signaling activation and a quick release design for easy battery replacement."