TTL serial, well-documented command set with examples, wide voltage range so should be simple.
I'd start by testing the "read product flag" command.
The device has a TTL serial interface, so the connecting it to an Arduino should be simple. Don't forget the 10kohm pullup mentioned in the datasheet.
The command set is simple and well-documented, and examples are provided.
The supply voltage is within the Arduino's range.
There is a command called "read product flag", which looks like a sort of "Who are you?" command, so that would be the one I'd try first.
You might want to look at the SoftwareSerial library to begin with.