Answering Machine Power Management PCB
Printed circuit board with DC-DC converters and battery charging circuits tailored for continuous operation of telephone answering machines. Ensures reliable 8521 apparatus uptime during outages. Specific to 8522.90.45.00 classification.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| šØš³China | Free | +35.0% | 35% |
| š²š½Mexico | Free | +10.0% | 10% |
| šØš¦Canada | Free | +10.0% | 10% |
| š©šŖGermany | Free | +10.0% | 10% |
| šÆšµJapan | Free | +10.0% | 10% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as power supplies separate from PCA
Static converters without PCA mounting shift to Chapter 85 power supply heading.
If generic electrical machines of unspecified function
Lack of principal apparatus specificity leads to other electrical parts.
Not sure which classification is right?
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Import Tips & Compliance
ā¢ UL/CSA safety certifications mandatory for power circuits
ā¢ Specify input voltage for US 120V compatibility
ā¢ Separate battery packs if shipped assembled
Related Products under HTS 8522.90.45.00
Telephone Answering Machine Main PCB
Printed circuit assembly containing the microcontroller, memory, and signal processing chips specifically designed for telephone answering machines of heading 8521. It handles voice recording, playback, and call detection functions. Classified under 8522.90.45.00 as a dedicated part for answering machines.
Answering Machine Audio Codec PCA
Specialized printed circuit board with ADC/DAC chips and amplifiers for digitizing and reproducing voice messages in telephone answering devices. Essential for the core recording functionality of 8521 apparatus. Falls under 8522.90.45.00 due to its principal use in answering machines.
Digital Answering System Control Board
Printed circuit assembly with flash memory controller and DTMF decoder for digital telephone answering machines. Manages message storage and remote access codes per heading 8521 specs. Specifically classified in 8522.90.45.00 for answering machine parts.
Caller ID Interface PCA for Answering Machines
Printed circuit board integrating FSK demodulator and display driver for capturing caller information in telephone answering systems. Directly supports 8521 answering machine functionality. HTS 8522.90.45.00 applies to these dedicated assemblies.
Voice Message Playback Amplifier Board
Audio power amplifier printed circuit assembly optimized for speaker output in telephone answering machines. Handles message playback volume control and tone generation for 8521 devices. Classified under 8522.90.45.00 as answering machine-specific part.
Remote Access Modem PCA
Printed circuit assembly with DTMF tone decoder and line interface for remote message retrieval in answering machines. Enables phone-based control of 8521 apparatus functions. HTS 8522.90.45.00 for dedicated answering machine telecom parts.