21''x 25'' Screen Printing LED Exposure Unit w/8 Pcs LED UV Light DIY Tool New. Max screen frame size: 21 X 25 inch (54x64 cm external diameter). With 8 pcs LED ultraviolet light. Equipped with 8mm tempered glass, keep safety when it was broken. Timer will turn off the light automatically according to the setting.
It will keep this setting and repeat use unless you change the exposing time. Send 2 pcs black sponge cover on the plate to get a better exposing result. Count range: 1 second--- 99 hours 59 minutes and 59 seconds.
Working temperature: - 25 c ---- 65 c. Different brand emulsion will need variety exposing time, operator need to test with this machine and set to the best exposing time. Before using, please press the "C" button to reset, it will display 00:00 00 and flash.
Press the "hour" "minute" and "second" button separately to set the countdown time, then the screen shows "ON". Press the "start/restart" button to start work. For example: need to set the expose time 5 minutes 30 seconds.
Ress "C" button to remove the original set. Press "minute" set to "5"; press "seconds" set to "30"; Then press "start/restart" to start machine, light on. After 5 minutes 30 seconds, light will turn off automatically. If this setting do not need to be changed, it will be saved automatically. When the machine start again, timer will start again from 5 minutes and 30 seconds.
Item include: 1 set 21x25 inch LED exposure unit --- 006854.