5. VDD supply voltage is 3.3V-5V, the voltage cannot exceed 6V! 6. When SPDIF is output, DATA is SPDIF OUT output pin! 7. Board size: 24 x 36.5MM
Button: PI00: short press to pause, long press for 3 seconds to enter pairing, Long press for 5 seconds to clear pairing record [PLAY]
PIO1: short press to reduce volume [VOL-]
PIO2: short press to increase volume [VOL+]
PI03: short press to play the previous song [PREV]
PI04: short press to play the next song [INEXT]
PI05: Bluetooth connection high level (output high level 3.3V)
Bluetooth name: KTC2700H
1. Power-on method: power on
Power on automatically enters back connection, and automatically enters pairing mode if back connection fails
2. Button
PI00: short press to pause, long press for 3 seconds to pair, long press for 5 seconds to clear pairing record
Pin definition:
1: DATA: IIS data output
2: BCK: IIS serial clock
3: LRCILK: IIS clock
4: VDD-IN: Power input 5V
5: GND: Power ground
6: SPK-R+: Differential analog signal output
7: SPKR-: Differential analog signal output
8: SPK-L+: Differential analog signal output
9: SPK-L-: Differential analog signal output
10: SPK-EN: Amplifier enable, pull high when there is audio
11: NEXT: Next song button
12: PREV: Previous song button
13: VOL+: Volume plus button
14: VOL-: Volume plus button
15: PLAY: Play/pause button
16: 33-0UT: 3.3V output, used for button common pin
17: LED1: Blue light
18: LEDO: Red light
Color: Black
Material: PCB
Package Contents:
1 * Audio Module
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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SHIPPING
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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.
