{"title":"RS-232 to RS-485 Converter","handle":"rs-232-to-rs-485-converter","url":"/products/rs-232-to-rs-485-converter","description":"A passive RS-232 to RS-485 converter that extends serial communication distance up to 1.2km using balanced differential signalling. Self-powered from the RS-232 TX/RX or RTS/CTS lines — no external power supply required. Features opto-isolation and lightning/surge protection for reliable industrial communication.\n\nThe RS-232 side uses a DB9 female connector, while the RS-485 side provides both a DB9 male connector and a 4-position screw terminal block.\n\nKey Features\n\n\nPassive Operation – Self-powered from RS-232 signal lines, no external power needed\n\nOpto-Isolation – Electrically isolated for noise immunity\n\nSurge Protection – Lightning and surge protectors built in\n\n1.2km Range – Extends RS-485 communication up to 1,200m over twisted pair\n\nDual RS-485 Connectors – DB9 male and 4-position screw terminal block\n\n300–115,200 bps – Supports standard baud rates\n\n\nSpecifications\n\n\nStandards: EIA/TIA RS-232 and RS-485\n\nWorking Mode: Asynchronous, half-duplex, differential transmission\n\nTransmission Media: Twisted pair or shielded twisted pair\n\nBaud Rate: 300–115,200 bps\n\nRS-485 Range: Up to 1,200m\n\nRS-232 Range: Up to 5m\n\nOperating Temperature: -25°C to 70°C\n\nHumidity: 5%–95%\n\nDimensions: 82.6 × 31.8 × 15.2mm (3.25\" × 1.25\" × 0.6\")\n\nWeight: 36g\n\nCompliance: CE, FCC, RoHS\n\n\nIdeal For\n\nExtending RS-232 serial devices over long distances\nIndustrial sensor communication (RS-485 bus)\nBuilding automation and SCADA systems\n\n\nPackage Contents\n\n1× RS-232 to RS-485 Converter\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":9436,"title":"Default Title","sku":"DF-TEL0038","price":22.04,"on_sale":false,"in_stock":true,"available_quantity":274,"option1":"Default Title"}]}