The Elastic Bumper protects the Motion Sensor from the carts, but doesn’t interfere with the ultrasonic pulse.
https://www.pasco.com/products/lab-apparatus/mechanics/carts-and-tracks/me-8998#specs-panel
The Elastic Bumper protects the Motion Sensor from the carts, but doesn’t interfere with the ultrasonic pulse.
https://www.pasco.com/products/lab-apparatus/mechanics/carts-and-tracks/me-8998#specs-panel