Product features:
● Interface feature: interface is compatible with EIA/TIA RS-232C, RS-422/485 standard
● Electric interface: RS-232C interface DB9 hole connector RS-422/485 interface 4-bit terminal
● Transmission media: twisted-pair cable or shielded cable
● Working mode: asynchronous half or full duplex
● Signal indication: three signal indication lights indicate TD, RD and PWR
● Power supply: serial port electricity stealing at RS-232 end. External power supply connecting at RS-422/485 end
● Isolation: isolation voltage 3500VRMS 500VDC sequence special built-in 400W lightning protection IC
● Transmission speed: 115.2K BPS to 1.2KM 38.4K BPS to 2.4KM
● The product has a few appearance and high efficiency serial port electricity stealing technology patents. 
● Patent Certificate NO: (ZL03234984.X    ZL0334377.2)
 

 Application fields:
● Point to point, point to multi-point communication
● Industrial distribution system, industrial control automation
● Road traffic control automation
● Closed circuit monitoring
● Security protection system
● Intelligent card, check on work attendance gate safety system