1、Various functions, 32 common functions, pulse triggering, power failure, cycle timing, etc., to meet more application needs. 2、The relay is equivalent to a passive contact switch, which controls the on and off of a wire, which is simple and convenient to use. 3、High compatibility, wide voltage working mode, 7v‑30v universal voltage, and support DC. 4、The output power can be controlled within 5A DC or AC load, adjustable at any time from 0.01 second to 999 minutes. 5、Wide range of applications, can be used to control solenoid valves, water pumps, motors, light strips, etc. Item Type: Relay Module Product Model: YF-7 Output Power: Control DC or AC Load within 5A Time Range: 0.01 Second to 999 Minutes, Any Time Adjustable Wiring Port Description: +: Input Power Positive -: Input Power Negative In+: Positive Signal Input Terminal In-: Negative Signal Input Terminal NO: The Relay Normally Open Interface, the Relay is Suspended Before It is Closed, and It is Short-Connected to COM After It is Closed. COM: Relay Common Interface NC: Normally Closed Interface of the Relay, Short-Circuit with COM Before the Relay is Closed, and Hang in the Air After Being Closed P-23: When the signal disappears for more than A second, the relay pulls in, the signal disappears, and the relay stops P-24: There is a signal. After A second, the relay is closed. After the signal disappears for more than A second, the relay stops. P-25: There is a signal. After A second, the relay is closed. When there is another signal for more than A second, the relay stops. P-26: When there is a signal, the relay will stop after closing for A second, and when the signal disappears, the relay will stop after closing again for A second. P-27: If there is a pulse signal, the relay stops; if there is no pulse signal, the relay will be closed for A second; (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 will be closed until the power is off P-31: After power on, the relay is closed for A second, disconnected for B second, infinite loop; power off stops P-32: When there is a signal, start P-31 infinite loop; when the signal disappears, terminate the loop P-33: Give a signal to start P-31 infinite loop; give another signal to terminate the loop P-34: After power-on, the relay will be closed after a delay of A seconds, and stop after being closed for B seconds P-35: There is a signal, after a delay of A second, the relay will be closed, and the relay will be closed after being closed for B seconds. P-36: When there is a signal, after A second, the relay will be closed, and after B second, the relay will stop, the signal disappears, and the timer will be cleared and stopped. P-37: If there is a signal, the relay will stop automatically for A second when the relay is closed, and then it will count 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 will automatically stop when it is closed for A second, and after stopping and counting for B seconds, it will stop automatically when it is closed again for A second. P-41: No action when there is a signal; trigger when the signal disappears; the relay is disconnected after a delay of A time P-42: The signal disappears, after delaying time A, the relay works; working time B ends P-43: The signal disappears. After the time A exceeds, the relay works; the working time B ends P-44: After giving the signal more than A times, the relay will be closed for B seconds and stop P-45: After power-on, relay 1 will work for A second and then disconnect; Relay 2 will work for B second and disconnect P-46: Give signal 1, after relay 1 works for A seconds and disconnects; relay 2 works for B seconds and disconnects P-47: Give signal 1, after relay 1 works for A second; relay 2 starts to work; after B second, relays 1, 2 are disconnected at the same time P-48: After power-on, relay 1 works for A seconds and then disconnects; stops for B seconds; relay 2 works for C seconds and disconnects and stops for D seconds; cycle 1 x Relay Module