Technical data Input power: 100-240V 50HZ/60HZ Power: 24w Light source: 8 pcs high led clamping Size: 18 X 74mm Adjustable Timer: 0-20minutes Power Instability: < 1% Color: white Application 1.Connect power source and turn it on 2.The machine is stand-by after a prompt sound of buzzing,Position "ON/OFF" would be showed glinting "20" 3.Adjust the operation time by"time up/ time down",adjust range from 1 to 20 minutes 4.Alarm soud after pressing"START" ,and a blue light transmitted from the light guide of terminal,time display is counting down. 5.Alarm sound for 5 second after countdown finished,blue light extinguish