Bluetooth to Serial Adapter - Class 1 - Ext Antenna (MKII)

This long range (Class 1) Bluetooth to Serial adapter has battery powered or USB powered input options.
Comes with External Antenna to eliminate your conventional RS232 Serial cables.

This is a revised MKII board now with DIP switch for baud rate and common configuration items.

Provides an easy to use, invisible connection with superior freedom of movement.

This Bluetooth to Serial Adaptor allows any device with a standard 9 pin serial port for wireless communication.

You can communicate with another Bluetooth Serial adapters or other Bluetooth enabled device such as a PC/Laptop.
Also some Tablets, PDA or mobile phones support Bluetooth to RS232 connections.

This device may be battery powered (not included) with supplied JST input cable.

Supports Bluetooth Serial Port Profile and Generic Access Profile
No need of external host and software
Easy installation and use
Supports configuration of the local device
Easy maintenance
Class 1 Device that supports up to 100 meters (line of sight)

Full Technical Specifications

Brand: BTLink
Model: BTL-2754
O/S Support: Windows 11, 10, Windows 8, Windows 7, XP, Linux, MAC OS and Android.
Baud Rate: Supports 1.2/2.4/4.8/9.6/19.2/38.4/57.6/115.2/230.4
Coverage: Up to 100m (line of sight)
Connection: Point-to-point
RS232 Signals: TxD, RxD, GND, CTS, and RTS
RS-232 Interface: DB9 Female
Compliant:Bluetooth specification v1.2 / v2.0 +EDR
Frequency: 2.400 to 2.4835GHz
Hopping: 1,600/sec, 1MHz channel space
Modulation: GFSK 1Mbps, DQPSK 2Mbps, and 8 DPSK 3mBPS
Tx. Power: Max. 18dBm (Class 1)
Rx.: Sensitivity -83dBm typical
Antenna: External antenna
Antenna Gain: Antenna max. 1 to 2dBi
Current Consumption: Max. 100mA
Compliant: CE, FCC & RoHS
Dimensions (L,W,H): 120mm x 35mm x 17mm

Package Contents

1 x Bluetooth Serial Adaptor
1 x External Dipole Antenna
1 x Mini USB cable for power supply
1 x BTLink Configuration Software (as download link below - license key emailed after purchase)

Optional Item

Male to Male converter (DB9 M to DB9 M) for DTE mode support  (add item 3300 to order)


Registration key provided free after device purchase via email
Configuration Software v1.02

These devices are also known as:
Bluetooth Serial Converters
Bluetooth to RS232 Converters
RS232 to Bluetooth Adapter
Serial to Bluetooth

BTLink BTL-2754
BTLink Bluetooth to RS232 Adaptor

User Guide / Manual

BTLink Bluetooth to RS-232 Adapter User Manual BT-Link-275x series V1.2

Related Product Enhancements

Directly compatible with DACIO 300 RS232 Input/Ouput Board (item 4130) for wireless I/O applications.
Bluetooth device can be powered via pin 9 option on DACIO 300.

Directly compatible with RS232 to TTL board item 4201 for long Bluetooth to TTL class 1 applications.
Bluetooth device can be powered via pin 9 option on RS232 to TTL 4201 boards.

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Bluetooth to Serial Adapter - Class 1, Battery & USB Input (MKII)

  • Model No.: 3754
  • Availability: In Stock
  • £43.19

  • Ex VAT: £35.99

  • 4 or more £41.39
  • 10 or more £40.74

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