Invincible configuration - delay on/off, self-locking and trigger delay function, power anti-reverse connection function (to prevent damage to the module) Excellent three-choice design - provide 5V/12V/24V three working voltage versions for users to choose impeccable functions - can be set anywhere from 0.1 seconds to 120 seconds, parameters can be saved, power failure does not lose the setting content is widely used - suitable for timer operation equipment, household appliances, lighting delay modification, factory equipment, delay control and other practical guarantees - Power-off memory of the last set parameter; The voltage signal at the signal terminal can be maintained for a long time; Opto-isolation of inputs and outputs enhances immunity to interference and power consumption.