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It is designed to measure pulse
Product Sensor style Standout Force Sensitive Resistor 0
The main difference is the USB-to-serial interface chip
and a dark blue PCB that reduces light interference on the onboard LED — making it better for production use
It is designed to measure motion
HC-SR501 PIR Motion Sensor Module - Digital Output flora It is designed to measureDetect Nearby Objects Without Contact The PIR Motion Sensor Module Digital HC SR501 is a proximity presence sensor module with digital output designed for presence sensing, short range detection, and touchless automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds. Key details include Input Voltage: DC 4. 5 20V; Output: 3. 3V. Why youll love it Optional temperature compensation: Optional
US$ 126.50
US$ 10.00
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