Fangrui Product Details Ir220 Is A Rs232 To Raw Ir (irphy Only) Adapter, It Can Convert Rs232 Data To Infrared, No Need To Install Driver. It Features A Rs232 Serial Cable On Pc Or Embedded System. There Are 7 Different Default Baud Rates, 9600 Baud Rate By Default , You Can Revise By Yourself. When Qty Is 10pcs Or Above, You Can Request To Set The Bautrate You Want. Deriving Power From Dtr And Rts Of Standard Rs232 Interface, User Must Enable Dtr And Rts Before Using It, Or Connect Dtr/rts Pin To 3.7v~12v External Dc Directly. The Default Baud Rate Of Ir220 Ir Adapter Is 9600bps, Irxon Can Also Supply Adapters With The Default Baud Rate At 2400, 4800, 19200, 38400, 57600 Or 115200 Bps. There Is A Red Led On The Top Center Of The Adapter Body, The Led Indicate The Activity Of Infrared Tx Signal. Connection: Db9-f Rs232 Serial Com Port Default Baud Rate: 9600 Bps Default Baudrate Options: 2400/4800/19200/38400/57600/115200 Bps Communication Distance: 1 To 100 Cm. (15optical Cone Angle) Size And Weight: 2.8inch L X