Description: [Application]:The DMX512 Line Tester is ideal for use in live performance venues or during engineering debugging. [Reminder]:Please ensure that the tester is used while the console is transmitting signals and avoid testing on ports outside of the signal line As each lighting console has a different refresh rate,some testers may cause LED indicator lights to flicker during testing (this does not affect normal use of the line tester). [Product Size]:The DMX512 Line Tester measures 5cm in length and has a diameter of 2cm,making it compact and easy to handle. [Material]:This Par Lights Tester is made from sturdy pp material,this product is designed for long term use. [Versatility]:This DMX Signal Line Fault Test Tool can not only test signals but also independently test signal lines,making it an essential tool for anyone working with stage lighting equipment. Specifications: Line tester failure tips: 1.The blue,red and green indicator lights are on,which means the signal is normal. 2.A single green indicator light lights up,indicating that the ground wire is disconnected or short-circuited. 3.A single blue indicator light lights up,indicating that the positive pole of the signal is disconnected or short-circuited. 4.A single red indicator light lights up,indicating that the negative pole of the signal is disconnected or short-circuited. 5.The red and green indicator lights are on,indicating that the negative pole of the signal and the ground wire are short-circuited. Size: 5cm/1.97inch x 2cm/0.79inch Note: Please allow slightly errors 1-2cm differences due to manual measurement. Package included: 1x DMX512 Line Tester