Specifications

HM-BT4502 V1.0
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can write to the module through APP, and the written data will be sent to the
user's MCU through the module's external interface. When the module
external interface receives the data package from the external MCU, it will
automatically forward it to the connected mobile device. Users need to design
the main MCU code and the smart mobile device APP.
5 Application Schematic
Figure 1. Application Schematic of the Pass-through Module