Click to expand Tap to zoom Grove - Ultrasonic Ranger by Seeedstudio Save HK$-1.00 HK$39.00 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This Grove-ultrasonic sensor is a non-contact distance measurement module which is compatible with the Grove system. It's designed for easy modular project usage with industrial performance.