Features 1、Light Indicator: This identifier can accurately identify the fiber direction. When the fiber has a signal, the left and right direction lamps display the signal direction. 2、3 Signal Identification: There is a buzzer identify when identifying the signal frequency, this identifier identifies the modulation signals of 270Hz, 1KHz and 2KHz. 3、LED Light: The LED light is stable and strong, and the beam is concentrated, which can effectively cooperate with the line detection, without interrupting the light source during the online test. 4、Accurate Measurement: This optical fiber can provide you with an accurate measurement that you can take it with confidence to help with your work! 5、ABS Material: Made of premium ABS material, this optical fiber identifier is strong, scratch resistant, not easy to damage, sturdy and durable. Specification Item Type: Optical Fiber Identifier Mode: A 40 Wavelength Identification Range: 800 to 1700nm Optical Fiber Cable Type: Approx. 3mm / 0.12in, 2mm / 0.08in, 0.9mm / 0.04in, 0.25mm / 0.01in Direction of Signal Lamp: Signal Lamp Display Identification Signal Frequency: 270HZ, 1kHz, 2kHz Accuracy: +10dB to -30dBm, +10dB to -25dBm Sensitivity Range: +10 to -50dBm Identification Signal Type: CW, 270Hz ± 5%, 1kHz ± 5%, 2kHz ± 5% Receiver Type: Dia 1 mm In GaAs2pcs Adapter Model: Dia 0.25(Applicable for Bare Fiber) Dia 0.9( Applicable for Dia 0.9 Cable) Dia 2.0( Applicable for Dia 2.0 Cable) Dia 3.0(Applicable for Dia 3.0 Cable) Signal Section: Left, Right LED Signal Direction Test Range (dBm, CW/0.9mm light): -46 to 10 (1310nm) -50 to 10 (1550nm) Signal Power Test Range (dBm, CW/0.9mm light): - 50 to +10 Frequency Test Range (dBm, average value): Dia 0.9, Dia 2.0, Dia 3.0 -30-0(270Hz,1KHz)-25-0(2KHz) Dia 0.25 -25-0(1KHz,2KHz)-20-0(2KHz) Insertion Loss: 0.8 (1310nm) 2.5 (1550nm) Red Light Test Burst: 650nm ± 10nm Power Detected by Red Light: Greater than 10mW Alkaline Battery: 1.5V AA x 2 (shipped without battery) Operating Temperature: - 10 to +60 (℃) Storage Temperature: - 25 to +70 (℃) Package List 1 x Optical Fiber Identifier 1 x Manual 1 x Storage Box