It is able to convert RS-232 signal to RS-485 balanced differential signal and extend the communication distance to 1.2km. It 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 this without requiring any AC or DC power. Data Transfer Rate: 300-115200bps Operating Distance: 1200m for RS485, 5m for RS232 Power: None required, uses TD as power source Environment: -10C to 85C, 5% to 95% RH Interface: Compatible with EIA/TIA RS-232C standard and RS-485 standard. Working mode: Asynchronous, half-duplex, differential transmission. .
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