Description Features:It is widely used in industrial automation, door safe, all-in one-card, car parking, bus charge, eatery sellCompatible with EIA/TIA RS232 and RS485 standardIt can convert TXD and RXD signals of rs-232 serial port into rs-485 signals of two and half duplexThere is no need for external power supply, it can steal power directly from the 3-pin rs-232 port, and send the 7-pin request (RTS) at the same timeThe 4-pin data terminal is ready (DTR) to supply auxiliary power to RS232/RS485The automatic flow control makes you do not need to reset, the hardware and installation software are very simple to useSpecifics:Item Name: Serial adapterColor: As pictureSize(L*W*H): About 5.5x3.5x1.8cmInterface RS232 side: DB9 female connectorInterface RS485 side: DB9 male connector with optional terminal board telecommunication agreementWork environment: -10degree to 86 degree,Relative humidity:5% to 95%Working mode: asynchoronous, half-duplex, differential transmissionTransmission media: common wire, double wire or UTP or Shielding lineTransmission rate:300-115200bps, which is capable of applying between host computers host computerTransmission distance: RS485 max.1200m,RS232 side max.5mPackage Include:1 x Serial adapter1 x ManualNote:1. Due to the light and screen difference, the item 039;s color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.