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HC-05 Bluetooth Module 6-Pin Slave/Master Serial Transceiver $1.97 – $3.27
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JDY-33 Dual Mode Bluetooth 3.0 Module SPP + BLE4.2 compatible with HC-05 HC-06 $0.83 – $1.04

JDY-31 Bluetooth 3.0 Module SPP Protocol compatible with HC-05 HC-06 JDY-30

$0.81 – $1.06

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Description

Model: JDY-31 BT06
Support Bluetooth SPP protocol, the transmission speed of up to dozens of K per second
Applications:
1: Bluetooth printer
2: Bluetooth POS machine
3: intelligent home control
4: Bluetooth wireless data transmission
JDY-30 manual download address: https://pan.baidu.com/s/1jIBSbD8

Advantages: Replace all Bluetooth 3.0 and 2.0 serial communication modules on the market

Input voltage with soldered baseboard: 3.6V-6V
input voltage without baseboard is 1.8V-3.6V

Features:
Bluetooth V3.0 + EDR
Bluetooth Class 2
Built-in PCB radio frequency antenna
Support UART interface
3.3V power supply
Operating Frequency Band:2.4GHz -2.48GHz unlicensed ISM band
Bluetooth Specification: V2.1+EDR
Host Interface: UART

Additional information
Weight N/A
soldered

No, Yes
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