Morse Code Telegraph Key - Material and durability: Made of high quality ABS and iron material to ensure a long service life. - Function and compatibility: Includes a buzzer and voice prompts to provide a better exercise experience. The data cable can be easily connected to most CW transceivers and transmitters for convenient use. - Easy installation and operation: The Morse code key is easy to install and remove for quick setup. Beginner friendly and simple to operate. - Craftsmanship and reliability: Designed with attention to detail, the telegraph key features simple yet artisanal workmanship. It is reliable and efficient, ideal for physics lessons and practicing Morse code. - Use scenarios: - Classroom or school physics lessons where Morse code is taught or demonstrated. - Amateur radio hobbyist use with CW transceivers for practice or casual communication. - Home practice, clubs, or training environments to improve Morse code speed and accuracy.