Specifications:

• Input Volt – 5 V DC, Audio Out : L R G (it must be connected to amplifire )
• Make Any Speaker Wireless, Make your Car Audio System Wireless
• Convers Speakers into Bluetooth Speakers
• Allows you to play songs to your speakers directly from your phone, Compact and Small can be powered with usb wall power adapter
• Can buy with PAM8403 Mini 5V Digital Small Power Amplifier Board

Features:

• Works with any USB Bluetooth adapters.
• Easy to use and completely encapsulated.
• This module includes key interface and state interface compared with Smart Bluetooth Module Baseboard.
• The Bluetooth Module Baseboard can be compatible with the master mode, slave mode and both master-slave mode.
• Works for Bluetooth TTL transceiver module which allows your target device to both send and receive the TTL data.
• The key interface on the baseboard is the master mode button and can be controlled by high level from external MCU, then this module will search again automatically.
• This module power supply input is 3.6~6V, Please be careful that it should be not more than 7V.

Features:

1. CPU and Memory: Xtensa® 32-bit LX6 Dual-core processor, up to 600 DMIPS.
2. 448 KByte ROM
3. 520 KByte SRAM
4. 16 KByte SRAM in RTC.
5. QSPI can connect up to 4* Flash/SRAM, each flash should be less than 16 Mbytes.
6. Supply Voltage: 3V~3.6V

Specifications:

• Model:HC-06 (Slave Mode only)
• Interface:VCC- GND- TXD- RXD
• Nominal Operating Voltage:3.3V DC
• Input Votage Range:3.6V to 6V (Never over 7V)
• Input current:30mA (unpaired), 10mA(paired)
• Effective Distance:10M (open area)
• Communication Format:8 data bits / 1 stop bit / without parity

Features 

• BT Version: Bluetooth Specification V4.0 BLE
• Send and receive no bytes limit.
• Working frequency: 2.4GHz ISM band
• Modulation method: GFSK(Gaussian Frequency Shift Keying)
• RF Power: -23dbm, -6dbm, 0dbm, 6dbm, can modify through AT Command AT+POWE.
• Speed: Asynchronous: 6K Bytes
• Synchronous: 6K Bytes
• Security: Authentication and encryption
• Service: Central & Peripheral UUID FFE0,FFE1
• Power: +3.3VDC 50mA
• Long range: Open space have 100 Meters with iphone4s
• Power: In sleep mode 400uA~1 .5mA, Active mode 8.5mA.
• Working temperature:–5 ~ +65 Centigrade
• Size: HM-10 26.9mm x 1 3mm x 2.2 mm;

Specifications:

1. BT Version: Bluetooth V4.0 BLE
2. Send and receive no bytes limit.
3. Working frequency: 2.4GHz ISM band
4. Modulation method: GFSK(Gaussian Frequency Shift Keying)
5. RF Power: -23dbm, -6dbm, 0dbm, 6dbm, can modify through AT
6. Command AT+POWE.
7. Speed: Asynchronous: 6K Bytes
8. Synchronous: 6K Bytes
9. Security: Authentication and encryption
10. Service: Central & Peripheral UUID FFE0,FFE1
11. Power: +3.3VDC 50mA
12. Long range: Open space have 30 Meters
13. Power: In sleep mode 400uA -1.5mA, Active mode 8.5mA.
14. Working temperature: –5 -65℃
15. Size: 24.8 x 24.8 x 7.5mm
16. Battery type: CR2032 (NOTE: he battery not included)