45 Watts UV Lamp with two fans and sensor Descripton: For UV Gel Curing only. Automatic timers: 90SECS, 120 SECS, 180SECS, 240SECS, 300SECS Wavelength: 370nm. Voltage: 100V-120V 50-60 Hz 220V-240V 50-60 Hz Measurement: 39.5 x 15.5 x 41 cm/PC Weight: 3.69 kgs/PC Packing: 4 PCS/CTN; 62 x 40.5 x 43 cm ( With Foam Packing) G. W.: 16 kgs/CTN 6 PCS/CTN; 61 x 39 x 36 cm (Color Box) G. W.: 23 kgs/CTN Usage: Be sure the UV bulb and every part fix well before using it. 1) Plug in, and press the O/I switch to position "I" 2) Put hand or foot into the machine, then set the time. 3) The UV Lamp can go out automatically after the time you set. 4) Please take the bottom out while replacing the bulb or cleaning inside of the lamp. 5) Using 5PCS 9W UV Bulbs, please replace the bulbs regularly for keeping the efficiency. Notice: 1. Don't stare at the UV bulb straightly. 2. In order to keep the efficiency, please operate according to the gel manual. Don't shorten or use over time.