Features 1、This identifier is designed with an all in one fixture for 2.0, 3.0mm 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 2.5mm 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. Specification Item Type: Optical Fiber Identifier Material: ABS Wavelength Recognition Range: 800nm ​​to 1700nm Signal Identification Type: CW, 270 Hz ± 5%, 1 KHz ± 5%, 2 KHz ± 5% Detector Type: φ1mm InGaAs 2 Pcs Adapter Fiber Type: General φ0.25 (Bare Fiber), φ0.9, Φ2.0, φ3.0 Optical Fiber Sheath Signal Direction: LED Indicator Light to Indicate Left and Right Directions Optical Power Reading Range: -40 DBm To 10 DBm Signal Frequency Range: 270Hz, 1kHz, 2kHz Battery: 2 x AA (Not Included) Operating Temperature Range: -10℃ To 60℃ Storage Temperature Range: -25℃ To 70℃ VFL Function Power Range: 10mW Test Distance: 8-10km Wavelength Range: 650nm Laser Type: LD LED Flashlight: Support Package List 1 x Manual 1 x Identifier 1 x Storage Bag