Specification BatteriesRequired : 1 Brand : OONO BulletPoint1 : Connect in series with any DB25 RS-232 interface for testing a serial RS-232 data link. Simple and easy, no oscilloscope is needed. DIP switch can setting disconnect or reconnect any signal, and support external probe test signal from male or female position. DB25 Connector Pin Assignment: Pin8 - DCD, Pin3 - RXD, Pin2 - TXD, Pin20 - DTR, Pin7 - GND, Pin6 - DSR, Pin4 - RTS, Pin5 - CTS, Pin22 - RI. BulletPoint2 : 8 Bi-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. BulletPoint3 : No 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. BulletPoint4 : OS Compatibility: Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac OS 10.X, ect. BulletPoint5 : Typical application scenarios: Watching the TXD and RXD LEDs either changing states or flashing to know data transferring direction: from machine to computer or from computer to machine. Verifying TXD/RXD wires should be wired crossed(swap pin2 and 3) or straight through by observing TXD and RXD LEDs at a rest state. etc... Color : default Color1 : green Color2 : Red ConnectivityTechnology1 : USB ConnectivityTechnology2 : I2C ConnectorType1 : HDMI ConnectorType2 : USB 2.0 CustomerPackageType : Standard Packaging DataTransferRate : 100 MHz ExternallyAssignedProductIdentifier : 6954525592899 ExternallyAssignedProductIdentifier1 : 0768470325855 ExternallyAssignedProductIdentifier2 : 768470325855 IncludedComponents : No IndoorOutdoorUsage1 : outdoor IndoorOutdoorUsage2 : indoor ItemName : RS232 DB25 Male to Female Breakout Tester LED Monitor Module ItemPackageDimensions_Height : 11.9126 centimeters ItemPackageDimensions_Length : 3.2004 centimeters ItemPackageDimensions_Width : 8.1026 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : logic-analyzers Manufacturer : CZH-LABS MaximumVoltage : 50 volts_of_direct_current MeasurementAccuracy : x MeasurementType : Voltmeter ModelNumber : Acogedormuvdwpni1f555 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPins : 4 PartNumber : D-1479 PowerSourceType : Corded Electric ProductDescription : 1, Connect in series with any DB25 RS-232 interface for testing a serial RS-232 data link. Simple and easy, no oscilloscope is needed. DIP switch can setting disconnect or reconnect any signal, and support external probe test signal from male or female position. DB25 Connector Pin Assignment: Pin8 - DCD Pin3 - RXD Pin2 - TXD Pin20 - DTR Pin7 - GND Pin6 - DSR Pin4 - RTS Pin5 - CTS Pin22 - RI 2, 8 Bi-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. 3, No 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. 4, OS Compatibility: Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac OS 10.X, ect. 5, Typical application scenarios: Watching the TXD and RXD LEDs either changing states or flashing to know data transferring direction: from machine to computer or from computer to machine. Verifying TXD/RXD wires should be wired crossed(swap pin2 and 3) or straight through by observing TXD and RXD LEDs at a rest state. Verifying it is a DTE or DCE device (and whether you need a null modem or not). Verifying whether modem controls are active, even if they're not being asserted. Testing control signal between control systems (AMX, Crestron, etc) and the devices they control. Determining if the serial connection is mated properly and if communications is occurring. Whether the wall control or the projector is malfunctioning. ProductSiteLaunchDate : 2015-01-25T08:00:00.000Z Size : 4-inch, 2.3-inch, 1-inch Style : Modern SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 Voltage : 9 volts WarrantyDescription : 1