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USB Bluetooth v.4.0 BLE Low Energy Dongle, Class 1

  • Model: CRSBT40
  • In Stock


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Most modern laptop computers have Bluetooth built-in but not all desktop computers have Bluetooth; so to Bluetooth enable a desktop computer (or a laptop without Bluetooth) you can use a USB Bluetooth dongle. The dongle we have here is a USB Bluetooth version 4.0 dongle which means that it confirms to the latest Bluetooth version 4 BLE Low-Energy specification which makes it compatible with most newer devices which has Bluetooth 4.0 such as iPhones, Androids and most newer handheld devices, tablets and computers.

This USB Bluetooth 4.0 dongle has a Class 1 a rating with a maximum range of up to 160 feet (50 meter) under good conditions and line-of-sight. Under less than good conditions the range is shorter. The range depends a lot on the environment.

Bluetooth 4.0 is backwards compatible with 2.1 so you can use this dongle with all your existing Bluetooth version 2.1 devices. It is a good solution for communicating with our Serial to Bluetooth v. 4.0 adapter but it can also be used with other v. 4.0 devices for audio, keyboards, headsets etc.

Windows built-in Bluetooth drivers and manager will work fine with this dongle but a full copy of 'CSR Harmony Bluetooth Stack' for Windows is included with the dongle.

USB serial Bluetooth

Overall features
  • Low-cost and easy to use
  • CSR / Qualcomm CSR8510 A10 processor
  • Class 1 Bluetooth up to 160 feet (50 meter)
  • Bluetooth V4.0, Low Energy BLE
  • Works with USB v1.1, 2.0 and 3.0 ports
  • Works with both laptops and desktops
  • USB bus powered


Part number CRSBT40
Chipset CSR / Qualcomm CSR8510 A10 Chipset
Operating systems Windows 11, Windows 10, Windows 8, Windows 7, Vista, XP, 2000, ME, 98, Linux, Mac
Drivers Windows : use built-in Windows drivers or 'CSR Harmony Bluetooth Stack' included with the dongle
Linux: use Bluez
Receiving / Sending range Up to 160 feet (50 meter) under good conditions
Bluetooth version Bluetooth 4.0 (Low Energy BLE)
Bluetooth Class Class 1
USB versions 1.1, 2.0 and 3.0
Transmission Power 9.75dBm
Sensitivity -91bBm receiver sensitivity
Max data rate 3Mbps
Antenna Integrated chip antenna
Operation Temperature -20 to +60 degree
Dimensions 22mm x 16mm x 6mm

For alternative wireless serial solutions please see our full selection of wireless RS232 adapters.


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