DC 12V 20A Programmable Digital Relay Time Delay Switch Module Brief description: Please pay attention to your first use. You need to wait 6s after setting the data, the module will save the date you set after 6s. Short press "SET" key: start the setting mode of the hour, the screen flashes. Please set the T1 time by flashing. Press the SET button and the screen will flash again. Set time T2 when it flashes. Then use two methods to record together: 1. Wait 6S, the screen stops flashing. The system automatically saves the set time; 2. Press the SET key. Long press the SET key: start the setting mode. There are parameters to choose: P0 and P1. You can select P0 or P1 by short press "SET". Parameters can be adjusted using the up and down keys under parameters P0 and P1. Restart key: Restart the function. Once the timer finishes, it works normally. To work again, short press the "Restart" button to restart the timer. Sold by grid cool store