Feature:1. Test and identification of power direction and frequency detection function.2. The identifier can directly test 0.25mm bare fiber, 0.9mm pigtail, 2mm or 3mm fiber jumper without need to change the adapter frequently.3. Clear LCD screen display, clear handwriting, convenient to read, easy to operate and measure.4. Fine quality material body, wear resistant and comfortable hand feeling.5. Compact and lightweight, easy to carry.6. Can identify 270Hz, 1Hz, 2KHz signal frequency.Specification:Fiber optical identifier is an essential tool for fiber maintenance during maintenance, installation, cabling and recovery for lossless fiber identification.Features:Test and identification of power direction and frequency detection function.The identifier can directly test 0.25mm bare fiber, 0.9mm pigtail, 2mm or 3mm fiber jumper without need to change the adapter frequently.Clear LCD screen display, clear handwriting, convenient to read, easy to operate and measure.Fine quality material body, wear resistant and comfortable hand feeling.Compact and lightweight, easy to carry.Can identify 270Hz, 1Hz, 2KHz signal frequency.Specifications:Color: blue+blackMaterial: plasticsWavelength recognition range: 800-1700nmOptical fiber cable type: 3.0/2.0/0.9/0.25mmIdentify signal frequency: 270Hz/1kHz/2kHzOptical fiber signal display detection range: 13 to -50dBmSignal direction detection range: 13 to -35dBmSignal frequency detection range: 13 to -30dBmOutput power: ≥10mVInterface: 2.5mmBattery: 2 * AA battery (not included)Item size: 220 * 38 * 28mm / 8.7 * 1.5 * 1.1inItem weight: 145g / 5.1ouncePackage size: 250 * 81 * 53mm / 9.8 * 3.2 * 2.1inPackage weight: 450g / 1.0lbPacking List:1 * Fiber Optical Identifier1 * Storage Bag1 * User ManualPackage List:1 * Fiber Optical Identifier1 * Storage Bag1 * User Manual