Specifications

HM-BT4502 V1.0
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FF92 is the module connection interval setting channel
Users can set the connection interval between the mobile device and module
by writing operation in the channel. In this way, users can flexibly control the
device power consumption and data throughput. In order to improve the
connection speed, the connection interval parameters are not saved, and the
default is always 30ms after power-on.
FF93 is the module serial port baud rate setting channel
Users can set the universal serial baud rate of the module by reading and
writing operation in the channel. The new baud rate is activated after 2
seconds. The parameter is saved on power failure. The default factory setting
is 5(115200 bps).
FF94 is the remote reset recovery control channel
By writing different values, different control functions can be realized.
1. Write 0x55 to reset the module by software.
2. Write 0x35 to restore the module lightly. The anti-hijacking password will
be restored to the factory settings, and then the module will be reset.
3. Write 0x36 to restore the module deeply. All system parameters will be
restored to the factory setting, and then the module will be reset.
FF95 is the module advertisement period setting channel
Users can set the advertisement period of the module by reading and writing
operation in the channel. The parameter is saved on power failure. The default