Why take a chance on blowing up your COMM PORT this simple device will protect your PC*, when plugging into an unknown device or plugging into one that has a short you can damage your comm port in a hurry! don't chance it.... RS232 system communication serial port optic isolation product. This product support transmission rate as high as 57,600bps, no external power needed, optic electric isolation 5KV, is applicable in tough environment. According to different customer need, there are 4 lines, 6 lines and 8 lines three types, separately corresponds to three line serial port application, five lines serial port application and 7 lines serial port application with RTS/CTS (or DTR/CTS). Transmission distance at 9,600bps is 10m, stable performance. It is widely used in the RS-232 serial port optical isolator of long line telecommunication in such system as point-to-point RS232 Interface Concurrently conforms to RS-232C of EIA/TIA . Supply from RS232 (one of TXD/DTR/RTS) . Telecommunication Speed:0-57.6KBPS . Transmission distance:0-5 kilometers . Isolation Voltage:Instant 3500V;continous 500V

• RS232 system communication serial port optic isolation product. This product support transmission rate as high as 57,600bps, no external power needed, optic electric isolation 5KV, is applicable in tough environment.
• Isolation Voltage:Instant 3500V;continous 500V
• Telecommunication Speed:0-57.6KBPS . Transmission distance:0-5 kilometers .
• Interface Concurrently conforms to RS-232C of EIA/TIA . Supply from RS232 (one of TXD/DTR/RTS) .
• Transmission distance at 9,600bps is 10m, stable performance. It is widely used in the RS-232 serial port optical isolator of long line telecommunication in such system as point-to-point RS232

RS232 system communication serial port optic isolation product. This product support transmission rate as high as 57,600bps, no external power needed, optic electric isolation 5KV, is applicable in tough environment.Balance World Inc