Overview: Onboard audio power amplifier LM386. Audio signal gain up to 200. Adjustable accuracy. Signal output indicator. Specifications: Mic sensitivity : 52dB. Frequency range : 50Hz ~ 20KHz. Power: 3.3V ~ 5.3V. Mounting holes size: 2.0mm.
Overview: Detects shake signal. Signal output indicator. Specifications: Dimension: 19.0mm * 16.0mm. Applications: Shake detection. Guard alarm. Smart car. Electric bricks.