https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
Bluetooth V2.1 RS-232 adapter-BT-232B

Bluetooth V2.1 RS-232 adapter-BT-232B

Uconnect International Co., Ltd.
Region: Taiwan
Update: 02/19/2016
Key Specifications
Specifications:

 Wireless standard: 2.4GHz,802.11 b/g

 operation mode: Simple AP/ Infrastructure mode

 Encryption type: WEP64/WEP128/TKIP/AES

 Antenna: 2dBi dipole antenna

 Interfaces: RS-232

 Baud Rate: 1200 to 921,600 bps

 Data Bits: 5, 6, 7, 8

 Parity: None, Even, Odd

 Stop Bits: 1, 1.5, 2

 Control Signals: TxD, RxD, RTS, CTS,

 Flow Control: Hardware RTS/CTS

 Protocols Supported ARP, IP, ICMP, UDP, TCP

 Operating Voltage: 4.5~27 VDC

 Power Max. 360mA

 Dimension: 80 x 40 x 18 mm

https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions