Product Description: This kit sends out ultrasonic waves from the ultrasonic module, and the distance of the objects in front is derived by calculating the length of the received . The pod can be positioned at any angle within 0-180°The pod is equipped with an ultrasonic module to detect the distance of objects within 180° of the surrounding area. The results of the measurement are output through the display and presented graphically, making it a fun little for project. Power input: USB power supply, 7-12V DC005 power supply holder input Product Name:Ultrasonic Radar Kit Dimension:165MMx95Mx85MM Product weight:88G Color:As Shown Material:Plastic+Metal Package Contents: 1 * electronic DIY kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.