Feature:1. Easy and convenient design, no need to change the fixture when testing on the cable, single-mode and multi-mode can be used universally.2. It can identify the signal frequency of 270Hz/1kHz/2kHz, and there will be a buzzer sound when identifying the frequency.3. Equipped with left and right direction lights to display the signal direction and can accurately identify the direction of the fiber. The left direction light is on to indicate that the light source is from right to left.4. Light-weight body, small size, proper button placement, you can easily pick up the test, easy to use and barrier-free5. Automatically shut down after ten minutes of no operation, energy saving and power saving, prolonging the use time.Specification:Item Type: Optical Fiber IdentifierModel: AUA-40Material: ABSBattery: 1.5V 2xAA Battery (Battery Not Included)Purpose: It can be used for fiber identification.TypeParameterWavelength Range800-1700nmSignal Recognition TypeCW, 270Hz5%, 1kHz5%, 2kHz5%Detector Type1mm InGaAs 2 pcsAdapter Fiber TypeUniversal 0.25 (bare fiber), 0.9, 2.0, 3.0 fiber jumperSignal DirectionLeft and right direction indication by LED indicatorOptical Power Reading Range-40dBm - +10dBmSignal Frequency Range270Hz, 1kHz, 2kHzRed Light Test Wavelength650nm10nmRed Light Output Power10mWOperating Temperature-10~+60Storage Temperature-25~+70.Package List:1 x Optical Fiber Identifier (Battery Not Included)1 x Manual1 x Carrying Case