Morse code 2 x Micro Key with practice sounder/light unit Ham Radio
Built and tested ready to go- just add 2 x CR2025 button cells to each battery holder, or use any 6volt DC supply.
This is for two complete units. The on board key can activate sounder or light or both together.
This is a learning aid for Morse code and when used in schools and clubs requires adult supervision. The sounder uses a button battery and this could cause harm to younger children if removed from its holder adult supervision required.