Multi USB / RS232 / RS485 / TTL Converter SF_USB but can be changed by

but can be changed by writing to the range register at location 2

Piezo Buzzer

You may use various batteries that have the voltage of 3

Want to persist data

Multi USB / RS232 / RS485 / TTL Converter SF_USB but can be changed byMultiplexer has a set of interfaces for a variety of multi function adapter plates. It supports USB, TTL, RS232, RS485 interfaces between the system conversions. What's more powerful is that it also supports one input multiple outputs, which greatly facilitates the communication between various controllers. Tip: Multiplexer board is divided into A and B interfaces. The signal can be converted between A and B. The signal in the same interface can't be