BT578 Serial Bluetooth adapter is usually connected to a serial device by DB9 serial port, and then communicates with a mobile phone or a computer via Bluetooth SPP or BLE, and thus build a wireless link between the serial device and the computer or mobile phone. It can eliminate your conventional RS232 serial cables, connects communication both sides over the air, provides a wireless serial connection with more freedom and convenience.
Bluetooth dual mode: Supports Classic Bluetooth Serial Port Profile(SPP) and new generation Bluetooth LE(BLE).
Could be connected to a computer or Android phone via SPP, or an Android or iOS phone via BLE.
Lower power consumption than BT578_V2, but longer communication distance.
Using the current popular Type-C interface for Power supply and charging.
Can be connected to female or male serial port device by DB9 connector or converter.
A green LED is used to indicate TX/RX activity of RS232 serial communication.
Supports Pin 9 power supply, just connect pin9 to 4~6V and pin5 to GND.
Built-in battery and charging circuit, more than 24 hours battery usage time.
Supports AT command setting on computer to personalize name, baud rate, etc.
Specification
Standard: Bluetooth v3.0(SPP) + Bluetooth v4.2(BLE)
Selectable Serial Baud Rate: 1200,2400,4800,9600,19200,38400,57600,115200 bps
Serial Communication BLE Characteristic: 0000ffe1-0000-1000-8000-00805f9b34fb
Typical Bluetooth Coverage: 30 meters (line of sight)
TX Power: 5dBm
RX Sensitivity: -95dBm
Typical working Current: 8 mA
Dimension and Weight: 78x34x16mm 30g
Material: Plastic
Color: As shown
Package Contents:
1 x Bluetooth 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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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.
