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CSR5341 Multi-Masters Per Slave 6 masters Bluetooth module
      Chipset: CSR5341
      Effective distance: More than 30M
      Size: 28mm*14.5mm
               1.1in*0.57in
      RF level: Class 2
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Characteristics:
  1. Support 6 lines SPP and 1 line BLE to connect and communicate at same time.
  2. Support communication between iOS, Android and Windows system.
  3. Support Android system to connect SPP and BLE at same time.
  4. High transmission speed: 20KB/s in SPP mode, 4KB/s(send) and 8KB/s(receive) in BLE mode.
  5. Support VBAT and USB_VBUS power supply.
  6. π/4-DQPSK modulation.
Specification:
Bluetooth Specification Bluetooth Classical V3.0 and BLE4.0/4.1/4.2
Working Frequency Band ISM band: 2.402～2.480GHz
Antenna Built-in ceramic antenna
Transmission Power Level Class2
Effective Distance More than 30M
Modulation Type π/4-DQPSK
Sensitivity 7 dBm transmit power and -90 dBm receive sensitivity
Security Features Support simple pair, code pair and non-authentication pair; Support Encryption and MITM Protection
Maximum Transfer Rate SPP 20KB/s
BLE Send 4KB/s
SReceive 8KB/s
Protocol SMP, L2CAP, ATT, GAP, GATT, SDP, RFCOMM, SPP, LE
Communication Interface Standard UART, support flow control and none flow control; UART Baud Rate support: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600, 1382400bps.
Communication Interface Standby: 0.4mA; others plz see details in Power Supply and Power Consumption Description
Peak Current 18mA
Power Supply VBAT pin power supply 2.65V ～ 4.2V
USB_VBUS pin power supply 2.65V ～ 4.2V
USB_VBUS pin power supply -20 ～ 70℃
USB_VBUS pin power supply -40 ～ 85℃
Module Size 28mm * 14.5mm * 1.6mm
Application:

Health care product (heart rate, pulse, etc.)

Motion wireless sensor (passometer, etc)

Digital product

Mobile phone wireless accessory

Wireless sensor.

Wireless-Control-Port device (Bluetooth keyboard, mouse, controller, etc.)

Wireless Alerter (Bluetooth anti-lost)