Electret microphone input: It can be input with a 3.5 headphone plug, or it can be externally welded (two microphones can be connected).
Power input: If you use a 3V battery to supply power, you can input it from the --3V-DC-IN position (note: the voltage at this position should not exceed 3.3V or the chip will be damaged), if you use an external power supply, you can input it from the 4-12V-DC-IN position ( This position can input 3.6-12V DC voltage)
Electret microphone amplifier board: using the electret-specific chip MAX9812H, it can be matched with any power amplifier
Comes with the board: a 2p power cord, a 3p (300mm long) shielded audio output cable
PCB size: 50mm X 20mm
Operating Voltage:
DC 3.6V-12V (or 3v battery powered)
Logistics information
Our products are located in Hong Kong, China, and the logistics speed depends on your specific location. According to our experience, it usually takes about 15-20 days of transportation time
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How to choose the correct size:
Step 1 Please measure your foot length carefully.
Step 2 Please choose the correct size according to your foot length and chinese size.
For example, If your foot length is 255 mm , you should choose the size 8.
