Feature: Various functions: 32 common functions, pulse trigger, power failure, cycle timing, etc., to meet more application needs. The relay corresponds to a passive contact switch, which controls the on and off of a line, which is simple and convenient to use. High compatibility: wide voltage working mode, 7v30v universal voltage, and support for DC. The output power can be controlled within 5A DC or AC load, adjustable at any time from 0.01 seconds to 999 minutes. Wide range of applications: can be used to control solenoid valves, water pumps, motors, light strips, etc. Specification: Item Type: Relay Module Product Model: YF-7 Input Voltage: DC 7~30V Optional Output Power: Control DC or AC load within 5A Time Range: 0.01 Seconds to 999 Minutes, Optional Time Adjustable Description of cable connection port: +: Input power Positive-: Input power NegativeIn+: Positive Signal Input TerminalIn-: Negative Signal Input TerminalNO: Relay's Normally Open Interface, The Relay is Off Before It Closes, and It is Short-Circuited to COM After It Closes.COM: Relay's Common InterfaceNC: Relay's Normally Closed Interface, Short Circuit with COM Before Relay Closes, and Hangs in the Air After ClosingP-23: When the signal disappears for more than A seconds, the relay pulls in, the signal disappears, and the relay stopsP-24: There is a signal. After A seconds, the relay closes. After the signal disappears for more than A seconds, the relay stops.P-25: There is a signal. After A seconds, the relay closes. When there is another signal for more than A seconds, the relay stops.P-26: When there is a signal, the relay stops after closing for A seconds, and when the signal disappears, the relay stops after closing again for A seconds.P-27: If there is a pulse signal, the relay stops; if there is no pulse signal, the relay closes for A seconds; (the signal continues or the signal disappears will be regarded as no pulse signal)P-28: After power-on, after a delay of A seconds, the relay closes until the power is turned offP-31: After power-on, the relay closes for A seconds, disconnects for B seconds, infinite loop; shutdown stopsP-32: When there is a signal, start P-31 infinite loop; when the signal disappears, end the loopP-33: Give a signal to start P-31 infinite loop; give another signal to end the loopP-34: After power-on, the relay closes after a delay of A seconds and stops after closing for B secondsP-35: There is a signal, after a delay of A seconds, the relay closes, and the relay closes after closing for B seconds.P-36: When there is a signal, after A seconds, the relay closes, and after B seconds, the relay stops, the signal disappears, and the timer is cleared and stopped.P-37: If there is a signal, the relay automatically stops for A seconds when the relay is closed, and then it counts for B seconds after it stops. The signal trigger is invalid within the time A+B.P-38: When there is a signal, the relay automatically stops when it is closed for A seconds, and after stopping and counting for B seconds, it automatically stops when it is closed again for A seconds.P-41: No action when there is a signal; trigger when the signal disappears; the relay disconnects after a delay of A timeP-42: The signal disappears, after delaying time A, the relay works; working time B endsP-43: The signal disappears. After time A is exceeded, the relay works; working time B endsP-44: After giving the signal more than A times, the relay closes for B seconds and stopsP-45: After power-on, relay 1 will work for A seconds and then disconnect; Relay 2 will work for B seconds and disconnectP-46: Give signal 1, after relay 1 works for A seconds and disconnects; relay 2 works for B seconds and disconnectsP-47: Give signal 1, after relay 1 works for A seconds; relay 2 starts to work; after B seconds, relays 1, 2 disconnect at the same timeP-48: After power-on, relay 1 works for A seconds and then disconnects; stops for B seconds; re