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This time delay relay module supports DC 5V, 12V and 24V wide voltage power supply, with adjustable timing from 0 to 200 seconds. It adopts monostable trigger function, which can complete delay switch output after external trigger signal. Built-in high-precision timing control chip ensures accurate time calibration and stable long-term operation. Simple wiring and small size make it easy for installation and embedded use. Perfectly applied to automatic equipment control, household electrical modification, intelligent sensor delay and electronic DIY project development.