Smoke Density Photodiode from Canada
Infrared photodiode for smoke obscuration measurement in fire alarm systems. HTS 8541.49.10 classification for photosensitive detection of light attenuation. Used in duct smoke detectors and clean room monitors.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Specify obscuration sensitivity (%/meter)
• UL/fire safety certifications required
• Distinguish from ionization chamber detectors