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 replacement on PC or embedded system. There are 7 different default rates, 9600 rate by default , you can revise by yourself. WHEN qty is 10pcs or above, you can request to set the bautrate you . Deriving power from DTR and of standard RS232 interface, must enable DTR and using it, or connect DTR/ pin to 3.7V~12V external DC directly. The default rate of IR220 IR adapter is 9600bps, IRXON can also supply adapters with the default rate at 2400, 4800, 19200, 38400, 57600 or 115200 . 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 Port Default rate: 9600 Default baudrate : 2400/4800/19200/38400/57600/115200 Communication Distance: 1 to 100 cm. (15°optical cone angle) Size and weight: 2.8inch L x 1.63inch W x 0.68inch H ( 67 x 46 x 19 mm) , 2.44oz (73g) RS232 Cable length: 1.2m Power Source: From DTR and pin of DB9 RS232 port Power Consumption: 0.3W Operating Temperature: -10℃ to 60℃ Model Number: IR220 infrared adapter SUPPORT: Windows 98SE//2000/XP color:As shown Material:plastic Package Contents: 1 x IR220 RS232 Serial Port IR Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.