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Check the listing for details. Delay Timer for relay Infinite Loop Loop High Quality New Practical. Condition: New. Listed at 10.52 USD. The relay opens again. Such a cycle. T1 and T2 are respectively set by two adjustable resistors. The relay is triggered, when T1 is delayed and the relay is off, the module will open. Repeat the test circuit, for example B. 1 minute, and then close the test loop for 1 minute.