This small exposure unit mainly used for exposure small screens,printing plate,hot stamping ;exposing area is 46 32cm. SPE-SBJ4632 110V Exposure Unit. SPE-SBJ4632 exposure unit. Exposure size. At first press the "C" button to remove the original set ; Then press "minute" set to"5"; press "seconds" set to "30"; Then press the "start/pause" to start the countdown, lamp open; After five minute 30 seconds countdown, plate burning machine tube closed.
eBay