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3V operating voltage
1pcs USB Cable
2V external battery
the effective distance range of 2 ~30cm
worst case scenario you can replace the chip for a few dollars and start over again
LAFVIN Basic Starter Kit 3V operating voltagewith Ultrasonic Sensor, Jumper Wire for R3 with Tutorial CD Product Details: Great starter kit for electronic hobbyists, students, and those new to Arduino! Contains diodes, resistors, switches, buttons, and more! Component List: 5pcs White LED 5pcs Yellow LED 5pcs Blue LED 5pcs Green LED 5pcs Red LED 1pcs RGB LED 2pcs Photoresistor 1pcs Thermistor 2pcs Diode Rectifier (1N4007) 2pcs NPN Transistor (PN2222) 1pcs Tilt Switch 5pcs Button (small) 1pcs IC
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