Photographic Darkroom Enlarger Timer
Precision quartz timer with f-stop calculator for controlling enlarger exposure times in professional darkrooms. Classified under HTS 9107.00.80.00 as a valued-over-$5 time switch for electrical enlarger operation.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other photographic accessories
Darkroom equipment primarily for image processing classifies under Chapter 90.
If time interval meters without switching
Measuring devices without electrical control function classify under other instrument clocks.
If basic exposure relays
Simple relay timers without clock movements fall under electrical apparatus.
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Import Tips & Compliance
• Document f-stop accuracy specifications; ensure darkroom/professional end-use
• UL lab equipment safety certification needed
• Distinguish from camera timers under Chapter 90
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