The Keye studio SC8002B is a compact audio output module built around the SC8002 amplifier module.

Technical Specifications:

Model: Keyestudio SC8002B

Amplifier Module

Amplifier IC: SC8002B (mono, Class AB) Operating Voltage: 3.3V – 5V DC Signal Gain: ~8.5× Interface: 3-pin header (VCC, GND, Signal) Volume Control: Onboard adjustable potentiometer

Onboard Speaker (HN2308-01-R)

Rated Impedance: 8O (±15%) Rated Power: 0.1W (max 0.15W) Frequency Range: 800 – 4000 Hz Resonant Frequency: 1500 Hz (±20%) Sound Output: =80 dB at 0.1W, 10cm, 1.5kHz Operating Temperature: -20°C to +60°C Weight: 3g

Wiring:

S = Signal, V = VCC, G = Gnd

A basic data sheet can be found at nznelectronics.co.nz

Common Uses: Tones and melodies via Arduino's tone() function (square wave input) Audible alerts for sensor triggers or alarm systems Simple music playback when fed from an audio source Sound feedback in robotics and interactive learning projects

Notes: Always set the potentiometer to minimum volume before powering on, then increase gradually — feeding a full-strength signal into the speaker without care can damage it.

The signal input expects a PWM square wave (e.g., from Arduino's tone() function), not a raw digital HIGH/LOW or analog audio line.

This module handles amplification only — for voice or music playback, pair it with an audio source such as a DFPlayer Mini.

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