This module can store 15 pieces of voice instruction. Those 15 pieces are divided into 3 groups, with 5 in one group. First we should record the voice instructions group by group. After that, we should import one group by serial command before it could recognize the 5 voice instructions within that group
Features
Voltage: 4.5-5.5V
Current: <40mA
Digital Interface: 5V TTL level UART interface
Analog Interface: 3.5mm mono-channel microphone connector + microphone pin interface
Size: 30mm x 47.5mm
