Model: RS232-RS485 - Quantity: 1 - Color: Grey + Green - Material: ABS - Able to convert RS-232 signal to RS-485 balanced differential signal and extend the communication distance to 1.2km - Uses a particular pump to gain power from RS-232 signal (RTS DTR TXD) without initializing the RS-232 series interface. - This interface converter does not require any AC or DC power - Serial port feature: Concurrently compatible with RS-232C RS-485 standard of EIA/TIA - Electric interface: D89 hole interface of RS-232 end DBP pin connector of RS-485 end compatible with post (4 or 5 connection) - Work methods: Asynchronous half duplex - Transmission media: common wire double wire or UTP or shielding Line - Transmission rate: 300~115200bps - Transmission distance: 5 meters (RS-232 end) 1.200 meters (RS-485 end) - Tel-communication agreement: Transparent - Work environment: -10