{"id":8934263783577,"title":"UTEK UT-277SM-ST RS-232\/422\/485 to Optical Fiber Media Converters","handle":"utek-ut-277sm-st-rs-232-422-485-to-optical-fiber-media-converters","description":"\u003ch3\u003eUTEK UT-277SM-ST RS-232\/422\/485 to Optical Fiber Media Converters\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eUT-277SM fiber optic modem supports asynchronous RS-232\/485\/422 communication.\nIt is the choice to connect remote terminal unit (RTU) with HOST or SCADA\ncontroller. It supports RS-232\/485\/422 asynchronous protocols; it can be mixed\nand matched to use 2 RS-232, RS-485 or RS-422 ports, and it supports 2 wires\n(half-duplex) RS-485 and 4 wires (full-duplex) RS-422 mode. The RS-485 mode\nsupports data transmission (TXD or SD) control, this enhance the adaptation to\nmost of the software. Fiber optic MODEM supports lots of optic connection\nbetween asynchronous serial ports. It supports 2 asynchronous serial devices\nto communicate under full-duplex or half-duplex via optic fiber; the\ncommunication distance can be as far as 4km at multimode, and 20km at single\nmode. The fastest transmission rate for RS-232 can be 115.2Kbps, and for\nRS-485\/422 can be 460Kbps. Ports with different electronic standards can be\nmixed and matched to use; it is without problem to connect RS-232 devices with\nRS-485\/422 devices. This is a good replacement of RS-232 to RS485\/422\nconverter, which with EMI\/RFT features., UT-277SM supports two signal data\ntransmission: transmit and receive data. At the same time, it is with\nRS-485\/422 data transmission auto control circuit; Zero delay conversion; all\nthe serial ports is connected via terminal block. Supports\nRS-232\/RS-485\/RS-422 ports Asynchronous transmission: point to point, 460kbps\nTransmission distance: Single mode: 20,000 Wavelength: 1,310nm\/1,550nm (single\nmode) Interface: RS-232: Terminal block RS-485\/422: Terminal block Fiber port:\nST RS-232: standard RS-232 3 wires ±15KV ESD protection, as high as 115.2kbps\ntransmission rate. Input voltage: DC9-48V 200mA RS-485\/422: auto negotiation,\nno need switch setting, ±15KV ESD protection Note: need 2pcs UT-277 to create\ncommunication.One for Tx; another for Rx.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eSupports point to point (point to multi point) connection Supports RS-232,RS-422,RS-485 protocol\u003c\/li\u003e\n \u003cli\u003eRS-232, RS-485\/422 working at the same time Supports 2 bits (half-duplex) \u0026amp; 4 bits (full-duplex) RS485 operating mode\u003c\/li\u003e\n \u003cli\u003eTransmission rate: 460kbps\u003c\/li\u003e\n \u003cli\u003eSupports master-slave mode\u003c\/li\u003e\n \u003cli\u003eSlave mode: can be worked as Hub\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-08-26T23:57:32+10:00","created_at":"2026-08-26T16:22:38+10:00","vendor":"UOTEK","type":"Serial Adapters","tags":["electronics_selected_Aug2026"],"price":31200,"price_min":31200,"price_max":31200,"available":false,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":48936819458201,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B00GI9WFQ4","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"UTEK UT-277SM-ST RS-232\/422\/485 to Optical Fiber Media Converters","public_title":null,"options":["Default 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UT-277SM-ST RS-232\/422\/485 to Optical Fiber Media Converters\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eUT-277SM fiber optic modem supports asynchronous RS-232\/485\/422 communication.\nIt is the choice to connect remote terminal unit (RTU) with HOST or SCADA\ncontroller. It supports RS-232\/485\/422 asynchronous protocols; it can be mixed\nand matched to use 2 RS-232, RS-485 or RS-422 ports, and it supports 2 wires\n(half-duplex) RS-485 and 4 wires (full-duplex) RS-422 mode. The RS-485 mode\nsupports data transmission (TXD or SD) control, this enhance the adaptation to\nmost of the software. Fiber optic MODEM supports lots of optic connection\nbetween asynchronous serial ports. It supports 2 asynchronous serial devices\nto communicate under full-duplex or half-duplex via optic fiber; the\ncommunication distance can be as far as 4km at multimode, and 20km at single\nmode. The fastest transmission rate for RS-232 can be 115.2Kbps, and for\nRS-485\/422 can be 460Kbps. Ports with different electronic standards can be\nmixed and matched to use; it is without problem to connect RS-232 devices with\nRS-485\/422 devices. This is a good replacement of RS-232 to RS485\/422\nconverter, which with EMI\/RFT features., UT-277SM supports two signal data\ntransmission: transmit and receive data. At the same time, it is with\nRS-485\/422 data transmission auto control circuit; Zero delay conversion; all\nthe serial ports is connected via terminal block. Supports\nRS-232\/RS-485\/RS-422 ports Asynchronous transmission: point to point, 460kbps\nTransmission distance: Single mode: 20,000 Wavelength: 1,310nm\/1,550nm (single\nmode) Interface: RS-232: Terminal block RS-485\/422: Terminal block Fiber port:\nST RS-232: standard RS-232 3 wires ±15KV ESD protection, as high as 115.2kbps\ntransmission rate. Input voltage: DC9-48V 200mA RS-485\/422: auto negotiation,\nno need switch setting, ±15KV ESD protection Note: need 2pcs UT-277 to create\ncommunication.One for Tx; another for Rx.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eSupports point to point (point to multi point) connection Supports RS-232,RS-422,RS-485 protocol\u003c\/li\u003e\n \u003cli\u003eRS-232, RS-485\/422 working at the same time Supports 2 bits (half-duplex) \u0026amp; 4 bits (full-duplex) RS485 operating mode\u003c\/li\u003e\n \u003cli\u003eTransmission rate: 460kbps\u003c\/li\u003e\n \u003cli\u003eSupports master-slave mode\u003c\/li\u003e\n \u003cli\u003eSlave mode: can be worked as Hub\u003c\/li\u003e\n \u003c\/ul\u003e"}