HC-SR04 Voice Sound Detection Sensor Module Intelligent Smart Robot Helicopter Airplane Boart Car For Arduino DIY Kit
![HC-SR04 Voice Sound Detection Sensor Module Intelligent Smart Robot Helicopter Airplane Boart Car For Arduino DIY Kit](http://ae04.alicdn.com/kf/HTB1lfBkXDjxK1Rjy0Fnq6yBaFXar.jpg)
sku: 4000095191328
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$5.00
Shipping from: China
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