Dayton multi-function time-delay relays control the opening or closing of contacts in a device at a specific time. They provide off first, on first, interval on, off / on delay, one shot, single shot falling edge, triggered on delay and watchdog functions in a single unit. These relays offer a time delay between 50 ms and 999 hours, and feature a pushbutton thumbwheel to select a built-in function and set time delay. They are equipped with an analogue meter to display mode & timing delay and an LED to indicate timing mode and time-out condition.