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FDK Digital Thermometer BT-A31CN Instruction Manual

BT-A31CN • May 23, 2026
Comprehensive instruction manual for the FDK Digital Thermometer (Model BT-A31CN), featuring fast and accurate readings, dual-color backlight, flexible tip, and voice guidance for fever detection in adults, kids,…

FDK ML621 3V Rechargeable Coin Battery User Manual

ML621 • November 30, 2025
Comprehensive user manual for the FDK ML621 3V rechargeable coin battery, including specifications, installation, operation, maintenance, and troubleshooting for camera applications.

FDK video guides

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