1、This identifier is designed with an all in one fixture for 0, 0mm patch cords, 0.9mm pigtails, and bare fibers. 2、The optical fiber detector has high sensitivity, and the test sensitivity is ‑40 dBm to 10 dBm. 3、This optical fiber detector is equipped with VFL function and a 5mm diameter universal interface. 4、Small and light, easy to carry, this optical fiber detector does not need to change the fixture during use. 5、With LED backlight display equipped, it is suitable for various environments, without auxiliary lighting. 6、The test distance is up to 10km, and the stability is high, light source is strong and stable, with strong penetrating power. 1 x Manual1 x Identifier1 x Storage Bag Item Type: Optical Fiber IdentifierMaterial: ABSWavelength Recognition Range: 800nm ​​to 1700nmSignal Identification Type: CW, 270 Hz ± 5%, 1 KHz ± 5%, 2 KHz ± 5%Detector Type: φ1mm InGaAs 2 PcsAdapter Fiber Type: General φ 0.25 (Bare Fiber), φ 0.9, Φ 2.0, φ 3.0 Optical Fiber SheathSignal Direction: LED Indicator Light to Indicate Left and Right DirectionsOptical Power Reading Range: -40 DBm To 10 DBmSignal Frequency Range: 270Hz, 1kHz, 2kHzBattery: 2 x AA (Not Included)Operating Temperature Range: -10℃ To 60℃Storage Temperature Range: -25℃ To 70℃VFL FunctionPower Range: 10mWTest Distance: 8-10kmWavelength Range: 650nmLaser Type: LDLED Flashlight: Support