On an Off-Delay timer module,
the output automatically activates when power is applied to the module's main
power input pin-4. Once input-1 has activated (triggered), a timing sequence
will begin, keeping the output active until the preset Off-Delay time has
elapsed. This Off-Delay duration is specified when ordering and can be
configured in milliseconds, seconds, minutes, hours, or even days. If the input-1 signal changes state during or after the off-delay timing has elapsed, the output will reactivate and/or cancel the off-delay timing.