DC 4,5-5,5 V Ultraschall Reichweitenmodul Radar Alarm Kit für Arduino Zum Selbermachen Kit
13,64 €
6, The design can be used as a car reversing radar. 1 x HC-SR04 ultrasonic ranging module. 3, Can set the alarm distance, press the set button, you can press plus, minus key, you can modify the alarm distance, and has power-off save function.
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