1. Programming Function Settings: Press And Hold The Set Key For 2 Seconds, The Corresponding Led Will Flash Quickly (4hz), And Then Short Press The M1 Or M2 Key. The Led Lights Will Flash Slowly On The Corresponding Function Screen In Sequence (the Order Of Lights Is X, R3, L3, R2, L2, R1, L1). Then Press The Set Key Once, And The Corresponding Functions Will Be Mapped To M1/2; 2. For Example, When Entering Programming Mode, Press The M1 Key To Display The Led On R1, Then Press The Set Key Again, The Led On R1 Will Become Permanently Lit, And The M1 Function Will Be R1; When Programming M2, It Is Similar To The Above Class. 10 Leds Serve As Button Function Indicator Lights, Indicating The Function Of Programming Buttons And Displaying 2 Led Lights. 3. Cancel Function: Press And Hold The Set Button For 5 Seconds, The Programming Indicator Led Will Change From Flashing Fast To Off, And The M1/2 Function Will Be Cleared. At This Time, The Button Has No Programming Function. 4. Programming Key Me