The TD365 timer is fully programmable, operates 24 hours/365 days, and can schedule 40 holidays and perform up to 99 daily/weekly independent timer events. Each of these events may be programmed to occur at any time, or day of the week. The "First Person In" feature is designed to delay the automatic disarming of a security system until a person with authorized access arrives. If nobody arrives, the associated event will be overridden and the security system will remain armed. The RCI TD365 has 2 momentary or latching SPDT relays to control locks and other electronically controlled devices or circuits. This makes the RCI TD365 day timer an ideal solution for openings with scheduled access.