SH1003 Smart Remote Control Fan Expansion Card

**SH1003 Smart Remote Control Fan Expansion Card** integrates a 300C DC brushed motor (dual‑PWM controlled), a single‑digit common‑cathode 7‑segment display, an active buzzer, an AHT20 sensor (I²C), an IR receiver (with remote), a potentiometer, two tactile buttons, and a 4‑pin female header. Compatible with Bit‑Tree development boards, it supports IR remote, temperature‑based, manual, ultrasonic‑sensing, and voice‑controlled fan projects. Designed for use with *Project‑Style Creative Programming* teaching materials, the card features black front and clear rear acrylic panels for observation, and is supplied in an eco‑friendly PP case with a detailed manual.

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