hat
2. pa nan 2: toujou prezan net ale pou peze kle a "Sou" pou 3 fwa nan yon 5 segond apwè pa nan 1, Klate ki poul pwal chanje depi 25%-10% tankou bay repons.
eng
2.Step 2: Continuously to press the key "ON" for 3 times within 5 seconds after step 1 ,the brightness of LEDs will change from 25% -10% as responding.