Specifications

HM-BT4502 V1.0
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9.10 Add the Custom Advertisement Content
Input the following strings to the serial port RX to customize the advertisement
content.
"TTM: ADD-" + Data
Among them, Data is the added advertisement content, the length is 0 < L ≤16,
the format is ASCII code. For example, input the "TTM: ADD - Advertisement"
to the serial port RX. The confirmation string "TTM: OK\r\n\0" will be received
from TX. If the instruction format is incorrect, the "TTM: ERP\r\n\0" will be
received.
This instruction will take effect immediately after it is set up. Users can
advertise some custom content through this function. This setting is power
down saved. If the setting is all 0 (16 bytes), the default advertisement content
is used instead of the custom advertisement.
9.11 Customize the Product Identification
Input the following string to the serial port RX to customize the product
identification.
"TTM: PID-"+ Data
Among them, Data is a product identification code of two bytes, ranging from
0x0000 to 0xFFFFFF (L = 2), and each character is input to the serial port RX
in ASCII code format. For example, input the "TTM: PID-RS" to the serial port