The URM04 Ultrasonic sensor is developed based upon our popular URM37 ultrasonic sensor, it is using RS485 interface which allows multiple sensors to be used simultaneously . The RS485 interface allows a number of sensors working together. Up to 32 URM04 may be connected together in a network.
URM04 Ultrasonic Sensor ➡︎➡︎ 🛒🛒
https://www.dfrobot.com/product-101.html
RS485 Shield for Arduino ➡︎➡︎ 🛒🛒
https://www.dfrobot.com/product-1024....
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