Spec:Item Type: Morse Code Key ControllerMaterial: FR4Battery: 2 x AAA Batteries (Not Included)How to Use:Recording: Press and hold F1 or F2 for more than half a second, you will hear M, and it will automatically record CW. After completing everything, press F1 or F2 and you will hear S. If the volume is exceeded, it will remind you with F, additional standards will not be recorded.Package List:1 x Morse Code Key Controller
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