{"id":9574903578861,"title":"RS232 LED Link Tester Module, DB9 Male to DB9 Female.","handle":"rs232-led-link-tester-module-db9-male-to-db9-female","description":"\u003ch3\u003eRS232 LED Link Tester Module, DB9 Male to DB9 Female.\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e1, Connect in series with any RS-232 interface for testing a serial RS-232\ndata link. Simple and easy, no oscilloscope is needed. 2, 8 double-color (red\nand green) LEDs indicate the logic states for respective data lines. Green for\nlogic HIGH and red for logic LOW. Full RS232 spec compliant with LEDs for all\n8 signals: DCD, RXD, TXD, DTR, DSR, RTS, CTS, RI. 3, No external power\nrequired. No driver required. Plug and play. Jack sockets(nuts) on the tester\ncan be unscrewed easily(with metal shell held in place) if needed to mate with\nanother connector that has jack sockets. 4, OS Compatibility: Windows 98, Me,\nXP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac\nOS 10.X, ect. 5, Typical application scenarios: Watching the TXD and RXD LEDs\neither changing states or flashing to know data transferring direction: from\nmachine to computer or from computer to machine. Verifying TXD\/RXD wires\nshould be wired crossed(swap pin2 and 3) or straight through by observing TXD\nand RXD LEDs at a rest state. Verifying it is a DTE or DCE device (and whether\nyou need a null modem or not). Verifying whether modem controls are active,\neven if they're not being asserted. Testing control signal between control\nsystems (AMX, Crestron, etc) and the devices they control. Determining if the\nserial connection is mated properly and if communications is occurring.\nWhether the wall control or the projector is malfunctioning.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eConnect in series with any RS-232 interface for testing a serial RS-232 data link. Simple and easy, no oscilloscope is needed.\u003c\/li\u003e\n \u003cli\u003e8 double-color (red and green) LEDs indicate the logic states for respective data lines. Green for logic HIGH and red for logic LOW. Full RS232 spec compliant with LEDs for all 8 signals: DCD, RXD, TXD, DTR, DSR, RTS, CTS, RI.\u003c\/li\u003e\n \u003cli\u003eNo external power required. No driver required. Plug and play. Jack sockets(nuts) on the tester can be unscrewed easily(with metal shell held in place) if needed to mate with another connector that has jack sockets.\u003c\/li\u003e\n \u003cli\u003eOS Compatibility: Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac OS 10.X, ect.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-09-16T01:28:37+10:00","created_at":"2026-09-09T15:30:17+10:00","vendor":"CZH-LABS","type":"Network \u0026 Cable Testers","tags":["industrial_Sep2026"],"price":13800,"price_min":13800,"price_max":13800,"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":50651541799149,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B07X2PN71C","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"RS232 LED Link Tester Module, DB9 Male to DB9 Female.","public_title":null,"options":["Default Title"],"price":13800,"weight":40,"compare_at_price":null,"inventory_management":"shopify","barcode":"MD-D1315-1","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/leoforward.com\/cdn\/shop\/files\/B07X2PN71C.jpg?v=1788931819","\/\/leoforward.com\/cdn\/shop\/files\/419WM5hVnrL.jpg?v=1788931819","\/\/leoforward.com\/cdn\/shop\/files\/419ZiV-UwUL.jpg?v=1788931819","\/\/leoforward.com\/cdn\/shop\/files\/41C0mYkeqHL.jpg?v=1788931819","\/\/leoforward.com\/cdn\/shop\/files\/41fbNphBtmL.jpg?v=1788931819","\/\/leoforward.com\/cdn\/shop\/files\/51H-Yi-AjSL.jpg?v=1788931819"],"featured_image":"\/\/leoforward.com\/cdn\/shop\/files\/B07X2PN71C.jpg?v=1788931819","options":["Title"],"media":[{"alt":null,"id":41958553026797,"position":1,"preview_image":{"aspect_ratio":0.998,"height":500,"width":499,"src":"\/\/leoforward.com\/cdn\/shop\/files\/B07X2PN71C.jpg?v=1788931819"},"aspect_ratio":0.998,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/B07X2PN71C.jpg?v=1788931819","width":499},{"alt":null,"id":41958553059565,"position":2,"preview_image":{"aspect_ratio":0.998,"height":500,"width":499,"src":"\/\/leoforward.com\/cdn\/shop\/files\/419WM5hVnrL.jpg?v=1788931819"},"aspect_ratio":0.998,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/419WM5hVnrL.jpg?v=1788931819","width":499},{"alt":null,"id":41958553092333,"position":3,"preview_image":{"aspect_ratio":0.998,"height":500,"width":499,"src":"\/\/leoforward.com\/cdn\/shop\/files\/419ZiV-UwUL.jpg?v=1788931819"},"aspect_ratio":0.998,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/419ZiV-UwUL.jpg?v=1788931819","width":499},{"alt":null,"id":41958553125101,"position":4,"preview_image":{"aspect_ratio":0.998,"height":500,"width":499,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41C0mYkeqHL.jpg?v=1788931819"},"aspect_ratio":0.998,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41C0mYkeqHL.jpg?v=1788931819","width":499},{"alt":null,"id":41958553157869,"position":5,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41fbNphBtmL.jpg?v=1788931819"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41fbNphBtmL.jpg?v=1788931819","width":500},{"alt":null,"id":41958553190637,"position":6,"preview_image":{"aspect_ratio":0.998,"height":500,"width":499,"src":"\/\/leoforward.com\/cdn\/shop\/files\/51H-Yi-AjSL.jpg?v=1788931819"},"aspect_ratio":0.998,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/51H-Yi-AjSL.jpg?v=1788931819","width":499}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eRS232 LED Link Tester Module, DB9 Male to DB9 Female.\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e1, Connect in series with any RS-232 interface for testing a serial RS-232\ndata link. Simple and easy, no oscilloscope is needed. 2, 8 double-color (red\nand green) LEDs indicate the logic states for respective data lines. Green for\nlogic HIGH and red for logic LOW. Full RS232 spec compliant with LEDs for all\n8 signals: DCD, RXD, TXD, DTR, DSR, RTS, CTS, RI. 3, No external power\nrequired. No driver required. Plug and play. Jack sockets(nuts) on the tester\ncan be unscrewed easily(with metal shell held in place) if needed to mate with\nanother connector that has jack sockets. 4, OS Compatibility: Windows 98, Me,\nXP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac\nOS 10.X, ect. 5, Typical application scenarios: Watching the TXD and RXD LEDs\neither changing states or flashing to know data transferring direction: from\nmachine to computer or from computer to machine. Verifying TXD\/RXD wires\nshould be wired crossed(swap pin2 and 3) or straight through by observing TXD\nand RXD LEDs at a rest state. Verifying it is a DTE or DCE device (and whether\nyou need a null modem or not). Verifying whether modem controls are active,\neven if they're not being asserted. Testing control signal between control\nsystems (AMX, Crestron, etc) and the devices they control. Determining if the\nserial connection is mated properly and if communications is occurring.\nWhether the wall control or the projector is malfunctioning.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eConnect in series with any RS-232 interface for testing a serial RS-232 data link. Simple and easy, no oscilloscope is needed.\u003c\/li\u003e\n \u003cli\u003e8 double-color (red and green) LEDs indicate the logic states for respective data lines. Green for logic HIGH and red for logic LOW. Full RS232 spec compliant with LEDs for all 8 signals: DCD, RXD, TXD, DTR, DSR, RTS, CTS, RI.\u003c\/li\u003e\n \u003cli\u003eNo external power required. No driver required. Plug and play. Jack sockets(nuts) on the tester can be unscrewed easily(with metal shell held in place) if needed to mate with another connector that has jack sockets.\u003c\/li\u003e\n \u003cli\u003eOS Compatibility: Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac OS 10.X, ect.\u003c\/li\u003e\n \u003c\/ul\u003e"}