Optical Fiber Recognition Instrument: Comes with red light and LED lights to meet the needs of the work, high-efficiency line measurement, easy to operateCan identify 3 kinds of signal frequencies: there is a buzzer sound when identifying the frequency 270Hz 1KHZ 2KHZFour-in-one universal fixture: suitable for 0.250.92.03.0mm online test without changing the fixtureSingle-mode and multi-mode universal: can be detected anywhere in single-mode and multi-mode fibersEquipped with high-brightness LED lighting, with stable light and strong , it is convenient for line inspection and construction in dark environments. Fiber penetration test distance up to 10KMUse 2 AAA dry batteries: Press the test switch and the screen will automatically display the measurement data Press down (Note: (without batteries)NameFiber optic recognition instrument red all-in-one machineCompatible fiber type:Universal 0.25 (bare fiber), 0.92.0, 3.0 fiber optic jumper wavelength identification range: 800~1700nmIdentification signal frequency: CW, 270Hz5%lkHz5%2kHz5%Accuracy: +10dB~-30dBm (continuous wave) +10dB~-25dBm (modulated signal)Signal direction: signal light displayDetector type: 1 mm Ingaas2pcsRed light test wavelength: 650nm 10nmRed light output power: 10mw knotVoice prompt: yesColour:blackMaterial:plasticPackage Contents:1 x Fiber Optic IdentifierOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.