SU109 is 3.3V and 5V USB bridge. It convert USB signal into 3.3V or 5V TTL signal and vice versa. This USB bridge is easy to connected with our RF modules, and convindence to configure the parameters of the RF modules. User can download the USB driver in our website freely.
Shorting the different pads to make the USB bridge worked as 3.3V or 5V interface.
Put on or off the cap of setting can make the RF module enter/exit setting mode when connected with our RF modules.
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