Specification Brand : Aexit BulletPoint1 : RS232 to RS485 Communication Converter Adapter. BulletPoint2 : RS232 Communication Converter is widely used in industrial automation, door safe, all-in-one-card, parking, ATM, bus charge, eatery sell out, staff attendance management, and highway toll gate, etc. BulletPoint3 : Compatible with EIA/TIA RS-232C and RS485 quality. BulletPoint4 : Interface RS232 Side: DB9 female connector. BulletPoint5 : Interface RS485 Side: DB9 male connector with terminal board. ItemName : Aexit RS232 to Speakers RS485 Communication Data Converter Adapter w A Satellite Speakers Terminal Board ItemTypeKeyword : computer-cable-serial-adapters Manufacturer : Aexit Material : Other ModelNumber : modle PartNumber : f190412ae020127 ProductDescription : Descriptions: - RS232 to RS485 Communication Converter Adapter. - RS232 Communication Converter is widely used in industrial automation, door safe, all-in-one-card, parking, ATM, bus charge, eatery sell out, staff attendance management, and highway toll gate, etc. - Compatible with EIA/TIA RS-232C and RS485 quality. Features: Interface RS232 Side: DB9 female connector. Interface RS485 Side: DB9 male connector with terminal board. Working Mode: Asynchronous, half-duplex, differential transmission. Transmission Media: Double wire or Shielding double Line. Transmission Rate: 300-115200bps, which the RS485 Communication Converter is capable of applying between host computers, host computer and its external equipments and forms point to point, point to multi-points network. Transmission Distance: RS485 max. 1200m, RS232 side max. 5m. Work Environment: 0C-70C Relative Humidity: 5%-95%. Signals: RS-232: DCD(1), RXD(2),TXD(3),DTR(4), 5GND(5), DSR(6), RTS(7), CTS(8),RI(9). DB9 Male Connector: D-/B(1), D+/A(2), ---(3), ---(4), GND(5), + 5v~ + 12v(6), ---(7), ---(8), ---(9) RS-485 Terminal Board: D+/A(1), D-/B(2), GND(3), + 5v~ + 12v(4) Weight: 72g Package Content: 1 X RS232 to RS485 Communication Converter with a terminal board.