ZBS44-421-SPF/M Class 2 Serial port Adapter with internal antenna
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The ZBA ZBS44-421-SPF is a general purpose Bluetooth Serial port adapter with a built in antenna. The ZBA ZBS44-421-SPF Serial Bluetooth adapter can be used in a wide variety of equipment especially when a direct cable replacement application is desired.

The BTS44-421 SPF/M Serial adapter is a Class 2 Bluetooth module using BlueCore4-External chipset from Cambridge Silicon Radio, a leading Bluetooth chipset supplier. It provides a fully compliant Bluetooth system for data and interfaces with a host PC via a standard DB9 connection and supports EDR data rates. The adapter firmware is fully compliant with the Bluetooth specification V2.0.

The Serial adapter has been designed to interface directly with legacy equipment using a DB9 port. The adapter¬ is availabe in either Male or Female versions.¬ ¬ The adapter can¬ be operated¬ in either¬ Slave or Master¬ mode and it may connect to any other Bluetooth enabled device that supports the SPP profile.¬

When used as a cable replacement product one adapter will act as the master the other the slave. Once power is applied to both devices they will pair with each other and commence communications. The master and the slave can be paired as a matched set in which they will retain their respective partners communication address (Bluetooth address) for fast pairing and seamless connections.

The Serial Bluetooth adapter has a rich set of commands that will allow easy use of this device in many applications.


  • Operating Frequency Band 2.40 GHz~2.48GHz unlicensed ISM Band
  • Bluetooth Spec. v2.0 Compliant + EDR
  • Enhanced Data Rate (EDR) compliant with v2.0.E.2 of specification for both 2Mbps and ¬ 3Mbps modulation modes
  • Class 2 type Output Power
  • Standard Effective distance 30m
  • ¬ Built-in 8Mbit Flash Memory
  • Support Firmware Upgrade (via The UART)
  • Active Bluetooth Connections signal
  • External power supply connection via DC jack or via 5VDC on Pin 9
  • Male and Female DB9 connectors available.
  • Multiple baud rates supported
  • Simple cable replacement
  • Easy programming commands via UART
  • Automatic low power mode supported
  • Dimensions = 10.6cm x 3.6 cm X 1.4 cm ( Class 2 internal antenna)
  • Weight = 20g
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