The main function of this product is to replace the traditional RS232 serial communication cable, convert the wired serial port to the wireless Bluetooth serial port, thereby implementing wireless serial communication. This product can be used on any device with a standard RS232 serial port via the DB9 interface, and can communicate wireless serial communication with USB Bluetooth adapters that support Bluetooth SPP communication functions, laptops, tablets, mobile phones, PDAs and other devices.
● This product is embedded in Bluetooth communication protocol software, supports Bluetooth SPP (Serial Port Profile) without having to install a driver that supports its work on its attached devices, which can be used on various devices with standard RS232 serial ports.
● The user does not need to understand the expertise of Bluetooth communication technology, for the user, or ordinary serial communication, the connection with the traditional serial cable connection is different, the serial communication software or serial communication code used in wired serial port connection can still continue to use.
● This product is the upgrade version of the BT5701. One machine can be connected to the male equipment, or it can also connect the female device; it can be used as a Bluetooth, or it can be used as a Bluetooth host.
● Built-in lithium batteries and charging circuits can be used in applications without external power supply. There are two styles of Class1 and Class2, and the open space communication distance is 100 meters and 10 meters, respectively.
● Provide a wealth of AT commands, users can set the baud rate, stop bit, check method of the adapter for their application requirements, modify the Bluetooth name of the adapter, the master, the master, pairing password, can also pass the AT command Query the current working status of the adapter.
● Provide a handover switch with a female head. If the public device is connected, it switches to f; if the female device is connected, switch to M.
■Market and application
The purpose of using BT578 is to replace the original serial cable, but how to replace it, users should have a clear plan before purchasing the product. Below is several typical applications of BT578.
● BT578 The slave is connected to the serial port by DB9 serial port, and is used with Bluetooth laptops, USB Bluetooth adapters, Bluetooth tablets, or mobile phones. This is a common way of use of BT578. The BT578 slave can only wait for the Bluetooth master device to find, when the master device finds the slave, send a pairing request from the master device, and verify the correct slave password on the main device(BT578 factory default pairing password 0000)After the pairing is completed, the Bluetooth main device assigns a Bluetooth virtual serial number to the BT578. The serial communication application running on the master device only needs to use this virtual serial number, which can be served in serial port with BT578, and then with BT578. The connected serial port device performs serial communication.
● The BT578 slave is used in pairs of BT578 hosts. First, pass a BT578 as the host, then connect the host and the slave to the two serial ports connected to the original serial cable, automatically search the slave after the host is powered up and the slave is completed. connect. After the connection is successful, the blue indicator on the host and the slave is flashed by the fast flash, and the green light is bright.
● BT578 host is used to connect Bluetooth from the device. The host will continue to search for the peripheral Bluetooth device and try to pair it, if the surrounding Bluetooth device responds to the pairing request of the BT578, it can be paired.
■Main specification parameters
● Execute standard: Bluetooth SIG V2.0,
● Bluetooth protocol: Bluetooth Serial Port Profile (SPP)
● Communication rate: 4800, 9600, 19200, 38400, 57600, 115200BPS
● Modulation method: 2.4G Direct Jumping(FHSS)
● Communication distance: Class2 products 10 meters, Class1 products 100 meters (open space)
● Transmit power: Class2 product 3DBM, Class1 product 20dBM
● Acceptive sensitivity: Class2 Products -80dBm, Class1 Products - 86DBM
● Work current / matching current: Class2 Product 8 / 25mA, Class1 Product 55 / 60mA
● Size and weight: 78x34x16mm 29g(Free battery)
■Product packaging list
● BT578 serial Bluetooth adapter
● DB9 female parent adapter
● 410mAH lithium battery(Built-in)
● 220V-USB power adapter one
● USB power charging line
● One instruction manual
● Certificate and warranty card