Rectangular black metal practice buzzer mounted on a hard baseplate with a manual Morse code key and an electric coil assembly. The unit features a knob, metal arm lever, and contact points for signal generation. The plate identifies it as a “Cadet Type” buzzer used for training in Morse code communication.
This model was commonly issued to Canadian military cadets and signal corps trainees for telegraphy instruction, allowing practice of Morse code transmission through electrical circuits producing audible signals.