On an Interval-Delay timer module without reset feature the output will automatically activates as soon as input-1 senses a contact closure or impulse signal. Output signal will remain activated until the preset off-delay timing cycle has elapsed. At the end of this cycle, the output deactivates. Output will reactivate again anytime input-1 senses another contact closure or impulse signal. If input-1 senses a signal during the off-delay timing cycle in input signal is then ignored. Off-delay duration is specified when ordering and can be configured in milliseconds, seconds, minutes, hours or even days.