Product Features
1. Determine if there are objects in the device. 2. Weight is only 3 grams. 3 for light-emitting diodes and phototransistors. 4. Apply for burglar alarm, electric door and non-touch switch. 5. Build a circuit with LEDs to alert the lights. product description Package Contents: 1 X KY-010 Photoelectric Sensor ARDUINO.
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