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Quality USB Serial Adapters for Windows 7, 8 and Windows 10 USBGear Providing the Best USB Serial Adapters in the Market. Offering FTDI USB Serial Chip sets in many products.

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  1. RS232/422/485 DB9 to Terminal Block 5 Pin Passive Adapter (Micro Sized)

    Regular Price: $20.95

    Special Price $14.95

    DB-9 Female input provides screw type terminal block for TX+, TX-, RX+, RX-, GND very small portable Adapter, the DB9 to terminal micro sized iSerial-TB5 is a passive micro DB9-Female to 5-pin terminal block. Learn More
  2. DB9 to Terminal Block 5 Pin Passive Adapter

    Regular Price: $21.95

    Special Price $9.88

    Passive DB9 Connect to 5-Pin Terminal Converter, The US-485TBP is a serial DB9 to Terminal signal converter from RS232 to a RS485 interface designed for PC, Workstation, Thin Client or. Learn More
  3. DB-9 F/F Serial RS232 Mini Gender Changer - Null Modem Adapter

    Female to Female RS232 Mini Gender Changer or Null Modem Adapter for serial cable applications. Connects to any RS232 DB-9 Male connector. Learn More
  4. RS232 Null Modem DB9 Male to DB9 Female Port Protector

    Protect your computer's serial port with this DB9 Male to Female Null Modem Adapter by removing port strain. Learn More
  5. RS-232 to TTL Converter 5V output

    The GM-1010-B interface converter converts data (TXD,RXD) of RS-232C to TTL/COMS; the TTL electrical level is 0-5V, without an external power supply.

    • Works with all communication software, plug & play
    • Baudrate: 300bps-115.2Kbps
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  6. RS-232 to RS-485/422 Port-Powered w/Optical Isolation

    The GM-10127-B is a port-powered converter with optoelectronic isolation. It complies with RS-232C, RS422, and RS-485 standards; it converts single side RS-232 signal to a balanced differential RS-422 or RS-485 signal.

    • Standards: RS-232C/ RS-485/ RS-422 EIA/TIA
    • RS-422/485 6 bits terminal block output
    • Port protection: RS-232 ±15KV ESD protection;
    •  RS-422/485 600W surge protection
    • Isolation: 2,500Vrms isolated voltage, continuous 500VDC
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  7. RS-232 to RS-485/422 Converter with Surge Protection

    Great for RS232 communication between a PC and a device that needs an RS422 or RS485 protocol. The GM-1042E-B converter is compatible with RS-232C, RS-485/422 standards. It converts RS-232 signals into balanced differential RS-485 or RS-422 signals.

    • Standards: RS-232C, RS-485/422 EIA/TIA
    • Baud rate: 300bps-115.2kbps
    • Transmission distance: 1,200m (RS-485/422); 5m (RS-232)
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  8. Mini RS-232 to RS-485 Converter

    The converter is compatible with RS-232C and RS-485 standards. It converts RS-232 signals into balanced differential RS-485 signals.

    • Standards: RS-232C,RS-485 EIA/TIA
    • Built in terminal block
    • Baud rate: 300BPS-115.2KBPS
    • Transmission distance: 1,200m(RS-485), 5m(RS-232)
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  9. RS-232 to RS-232 Mini Port-Powered Isolator

    The GM-1011-B is an RS-232 serial port optoelectronic isolator. It adopts advanced optoelectronic isolation technology, maximally protects RS-232 serial interface devices from bad environment damage, such as ground loop circuit voltage, surge, lightning, ESD, hot-plug and electromagnetic interference, etc.

    • Standards: RS-232 & CCITTV.24 asynchronous protocol
    • Power: from RS-232(TXD, RTS or DTR)
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  10. RS-232 Optical Isolated Line Booster 2,500Vrms

    The GM-1012-B RS-232 extender with optoelectronic isolation allows extending the communication distance between 2 sets of asynchronous RS-232 communication devices to 12km.

    • Enables RS-232 transmission distance to 12km
    • Isolated voltage: 2,500Vrms impulse or 500VDC
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