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there are three digital pins: Clock
serial mode
Getting Started Guide
Proximity detection
Linear Bearing Block SCS8UU dimensions and datasheet
High Sensitivity Vibration Detection Sensor (Vertical) timer 555 there are three digital pins:This is a high sensitivity vibration detection sensor. It detects the slightest motion and trigger a signal. The sensor has a small spring inside a metal tube. When the sensor vibrates, the spring hits the metal tube and the sensor will be activated. The sensor can be used in car alarm, front door alar, toys, security, motion detection and many other applications. Features Working Voltage: < 12V Max current: 50mA Operating temperature range: 40 to 80
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