Features: Made of natural wood, light and durable. It is odorless and safe for kids. Our kits make it easy for teachers and parents- to provide kids with super fun and creative- learning activities! USB power supply, 7-12v power input; In this suite, the ultrasonic module sends out ultrasonic waves-, and the distance of the object in front is obtained by calculating the time- of receiving the echo-. The steering gear can be positioned at any angle from 0 to 180 degrees-. The steering gear is equipped with an ultrasonic module to detect the distance of objects within 180 degrees- around. It is a very interesting ARDUINO-project to output the measurement results through the display screen and present them graphically. A very good educational toy can help children develop their thinking creativity, hands-on ability, patience and attention. Specifications: Material: Wooden Size: Approx.165x95x85mm/ Type: T1-Welded Radar/ T2-Single Frame without Accessories Such As Steering Gear Control Panel Package Includes: 1x Kids Robot Making Kit- note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.