{"id":8115057983668,"title":"RS422 Mutual Transfer TTL Bi-directional Signal Module Full Duplex 422 to Single Chip with Protection Circuit Status Indicator MAX490 to TTL Modules (Pack of 2)","handle":"rs422-mutual-transfer-ttl-bi-directional-signal-module-full-duplex-422-to-single-chip-with-protection-circuit-status-indicator-max490-to-ttl-modules-pack-of-2","description":"\u003ch3\u003eRS422 Mutual Transfer TTL Bi-directional Signal Module Full Duplex 422 to Single Chip with Protection Circuit Status Indicator MAX490 to TTL Modules (Pack of 2)\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eProduct description: This bi-directional full duplex RS422 to TTL signal\nmodule is an energy-saving RS-422 transceiver. Functions: The power indicator\nas well as the display for data transmission and reception provide a clear\noverview of the data status. The module has a 120 ohm terminating resistor,\nwhich effectively reduces echo interference during remote communication.\nTechnical data: RS422 interface, bi-directional communication A, B, Y, Z\ntransmission distance up to 1000 meters. The TTL side of the module is powered\nby DC 5V and is compatible with 5V logic signals. The module uses a high-\nquality MAX490 chip for excellent stability and a maximum communication speed\nof 2.5 Mbps. Module Dimensions: 50mm x 27mm x 1.4mm Weight: approx. 10g\/unit\nProtection functions: The module has 15 kV ESD protection. It contains a TVS\ndiode and is flash and shock resistant. A 10 ohm current limiting resistor\nprotects the board from overcurrent. Operating principle: TTL to RS-422\n(Send): The module converts the TTL signal (0V logically corresponds to 0.5V\ncorresponds to logical 1) from the UART TX pin of the microcontroller to an\nRS-422 differential signal via the MAX490 chip (via the two wires A and B, the\nlogic signal is transmitted via the voltage difference between them). RS-422\nto TTL (receive): The module converts the received RS-422 differential signal\ninto a TTL signal via the MAX490 chip and transmits it to the UART RX pin of\nthe microcontroller. This differential transmission method effectively\nsuppresses common mode interference, making it ideal for remote communication.\nBox contents: 2 x RS422-TTL Signal Module\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eProduct overview: This full duplex RS-422 to TTL module (based on the MAX490 chip) allows stable and reliable serial communication with microcontrollers over long distances. It is an RS-422 transceiver with low power consumption. Built on the MAX490 chip, the module features important protection circuits and status indicators for improved stability and ease of use.\u003c\/li\u003e\n \u003cli\u003eFunctions: Power and data transfer\/receive indicators provide a clear overview of the data status. The module also has a 120 ohm terminating resistor, which effectively reduces echo interference during remote communication.\u003c\/li\u003e\n \u003cli\u003eTechnical data: RS422 interface, bi-directional communication. A, B, Y, Z transmission distance of up to 1000 meters. The TTL side of the module is powered by 5V DC and is compatible with 5V logic signals. The module uses the high-quality MAX490 chip for excellent stability and a maximum communication speed of 2.5 Mbps. Module dimensions: 50 mm x 27 mm x 1.4 mm; weight: approx. 10g per module\u003c\/li\u003e\n \u003cli\u003eProtection functions: the module provides 15 kV ESD protection and has a TVS diode. Lightning and voltage peak protection is provided; a current-limiting 10 ohm overcurrent protection resistor is integrated.\u003c\/li\u003e\n \u003cli\u003eApplications: Widely used in industrial automation and control systems for data exchange over long distances between PLCs, sensors and actuators. The building blocks are also used in security monitoring systems, central control of lighting, air conditioning, access controls and other systems, as well as for remote communication with microcontrollers.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-09-02T12:32:29+10:00","created_at":"2026-09-01T21:48:45+10:00","vendor":"DEWOTHV","type":"Analog to Digital Converters","tags":["industrial_DE_Aug2026"],"price":10100,"price_min":10100,"price_max":10100,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":44374763471028,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"de-B0GR85S6X4","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"RS422 Mutual Transfer TTL Bi-directional Signal Module Full Duplex 422 to Single Chip with Protection Circuit Status Indicator MAX490 to TTL Modules (Pack of 2)","public_title":null,"options":["Default Title"],"price":10100,"weight":19,"compare_at_price":null,"inventory_management":"shopify","barcode":"DE-254","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/auspowers.com\/cdn\/shop\/files\/B0GR85S.jpg?v=1788263328","\/\/auspowers.com\/cdn\/shop\/files\/411NiG4QRkL.jpg?v=1788263328","\/\/auspowers.com\/cdn\/shop\/files\/41IdPaaQ69L.jpg?v=1788263328","\/\/auspowers.com\/cdn\/shop\/files\/41dT0Ru7msL.jpg?v=1788263328","\/\/auspowers.com\/cdn\/shop\/files\/41l1obh-cML.jpg?v=1788263328","\/\/auspowers.com\/cdn\/shop\/files\/31wneuOZ8sL.jpg?v=1788263328"],"featured_image":"\/\/auspowers.com\/cdn\/shop\/files\/B0GR85S.jpg?v=1788263328","options":["Title"],"media":[{"alt":null,"id":33271860461748,"position":1,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/B0GR85S.jpg?v=1788263328"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/B0GR85S.jpg?v=1788263328","width":500},{"alt":null,"id":33271860494516,"position":2,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/411NiG4QRkL.jpg?v=1788263328"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/411NiG4QRkL.jpg?v=1788263328","width":500},{"alt":null,"id":33271860527284,"position":3,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/41IdPaaQ69L.jpg?v=1788263328"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/41IdPaaQ69L.jpg?v=1788263328","width":500},{"alt":null,"id":33271860560052,"position":4,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/41dT0Ru7msL.jpg?v=1788263328"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/41dT0Ru7msL.jpg?v=1788263328","width":500},{"alt":null,"id":33271860592820,"position":5,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/41l1obh-cML.jpg?v=1788263328"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/41l1obh-cML.jpg?v=1788263328","width":500},{"alt":null,"id":33271860625588,"position":6,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/31wneuOZ8sL.jpg?v=1788263328"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/31wneuOZ8sL.jpg?v=1788263328","width":500}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eRS422 Mutual Transfer TTL Bi-directional Signal Module Full Duplex 422 to Single Chip with Protection Circuit Status Indicator MAX490 to TTL Modules (Pack of 2)\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eProduct description: This bi-directional full duplex RS422 to TTL signal\nmodule is an energy-saving RS-422 transceiver. Functions: The power indicator\nas well as the display for data transmission and reception provide a clear\noverview of the data status. The module has a 120 ohm terminating resistor,\nwhich effectively reduces echo interference during remote communication.\nTechnical data: RS422 interface, bi-directional communication A, B, Y, Z\ntransmission distance up to 1000 meters. The TTL side of the module is powered\nby DC 5V and is compatible with 5V logic signals. The module uses a high-\nquality MAX490 chip for excellent stability and a maximum communication speed\nof 2.5 Mbps. Module Dimensions: 50mm x 27mm x 1.4mm Weight: approx. 10g\/unit\nProtection functions: The module has 15 kV ESD protection. It contains a TVS\ndiode and is flash and shock resistant. A 10 ohm current limiting resistor\nprotects the board from overcurrent. Operating principle: TTL to RS-422\n(Send): The module converts the TTL signal (0V logically corresponds to 0.5V\ncorresponds to logical 1) from the UART TX pin of the microcontroller to an\nRS-422 differential signal via the MAX490 chip (via the two wires A and B, the\nlogic signal is transmitted via the voltage difference between them). RS-422\nto TTL (receive): The module converts the received RS-422 differential signal\ninto a TTL signal via the MAX490 chip and transmits it to the UART RX pin of\nthe microcontroller. This differential transmission method effectively\nsuppresses common mode interference, making it ideal for remote communication.\nBox contents: 2 x RS422-TTL Signal Module\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eProduct overview: This full duplex RS-422 to TTL module (based on the MAX490 chip) allows stable and reliable serial communication with microcontrollers over long distances. It is an RS-422 transceiver with low power consumption. Built on the MAX490 chip, the module features important protection circuits and status indicators for improved stability and ease of use.\u003c\/li\u003e\n \u003cli\u003eFunctions: Power and data transfer\/receive indicators provide a clear overview of the data status. The module also has a 120 ohm terminating resistor, which effectively reduces echo interference during remote communication.\u003c\/li\u003e\n \u003cli\u003eTechnical data: RS422 interface, bi-directional communication. A, B, Y, Z transmission distance of up to 1000 meters. The TTL side of the module is powered by 5V DC and is compatible with 5V logic signals. The module uses the high-quality MAX490 chip for excellent stability and a maximum communication speed of 2.5 Mbps. Module dimensions: 50 mm x 27 mm x 1.4 mm; weight: approx. 10g per module\u003c\/li\u003e\n \u003cli\u003eProtection functions: the module provides 15 kV ESD protection and has a TVS diode. Lightning and voltage peak protection is provided; a current-limiting 10 ohm overcurrent protection resistor is integrated.\u003c\/li\u003e\n \u003cli\u003eApplications: Widely used in industrial automation and control systems for data exchange over long distances between PLCs, sensors and actuators. The building blocks are also used in security monitoring systems, central control of lighting, air conditioning, access controls and other systems, as well as for remote communication with microcontrollers.\u003c\/li\u003e\n \u003c\/ul\u003e"}