Extend the range of your serial RS232 control interface with the convenience of standard Cat 5e cables. Compatible with all RS232 protocols. Features Fullduplex data communication. Sends RS232 data at 230 kbps up to 1000M / 3300 ft. Pure hardware solution real time data transfer; no software conflicts. Transfer data or files between PCs; equipments. One CAT5 cable extension. Package Contents RS232 Extender Local Unit RS232 Extender Remote Unit 1 user manual 2 power adapter DC 9V/300mA 1 20cm Null Modem cable DB9 Male to Male Monoprice continually strives to improve its product line to bring our customers the best products available. Therefore; changes may be made to listed specifications without prior notice. Item received may not match photo or specs shown. Support Files: User s Manual Jan 3; 2008