Specification Brand : Hilitand BulletPoint1 : INSTRUCTIONS:When the board connected to the PC and the PC restarted, the relays will be toggled several times. This because of the structure of the FTDI chip BulletPoint2 : BETTER VOLTAGE ISOLATION:Extra PCB openings for better voltage isolation BulletPoint3 : OPERATING VOLTAGE:The device must be supplied with 12 VDC to work BulletPoint4 : DOUBLED HIGH CURRENT TRACKS:Doubled high current tracks BulletPoint5 : NOTE:There no against reversed voltage! If the VCC(+12V) and GND are reversed the board will be damaged CompatibleDevices : Personal Computer ConnectorType : Quick Connect CurrentRating : 12 amps ExternallyAssignedProductIdentifier1 : 741870708893 ExternallyAssignedProductIdentifier2 : 0741870708893 GraphicsCardInterface : pci_e_x16 ItemName : 8 Channel 12V DC USB Relay Board Module Controller for Automation Robotics ItemPackageDimensions_Height : 13.3 centimeters ItemPackageDimensions_Length : 2.8 centimeters ItemPackageDimensions_Width : 8.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : electromechanical-relays MainPowerConnectorType : DC Power Jack Manufacturer : Hilitand Material : PCB MaximumSwitchingCurrent : 12 amps MaximumSwitchingVoltage : 120 volts MeasurementSystem : Metric MeasurementSystem1 : Imperial MeasurementSystem2 : Metric MemorySlotsAvailable : 1 ModelNumber : 7PV15381AW30 NumberOfItems : 1 NumberOfPorts : 10 OperationMode : Automatic PartNumber : Hilitandrwptv6deh7 Platform : fly ProductDescription : Features: When the board connected to the PC and the PC restarted, the relays will be toggled several times. This because of the structure of the FTDI chip. The device must be supplied with 12 VDC to work. Extra PCB openings for better voltage isolation. Doubled high current tracks. There no against reversed voltage! If the VCC(+12V) and GND are reversed the board will be damaged. The board can not work without computer.