8 in 1 Fiber Optic Cable Tester with OTDR Event Maps Stable Light Source Optical Power Meter 24dB Connector with FC APC 100‑240V US Plug Item Type: Fiber Optic Cable Tester Material: ABS, Silicone Mini Pro OTDR Parameters: Model: JW3302SJ Wavelength: 1610nm±20nm Online Testing Fiber Type: G.652 SM Fiber Dynamic Range: 24dB Event Blind Zone: Approx. 3meter / 3.28yd ATT Blind Zone: Approx. 8m / 8.75yd Testing Range: Approx. 10m to 60km Pulse Width: 5ns to 10us Distance Accuracy:±(1m+Sampling Interval +0.005%×Test Distance) Loss Accuracy: ±0.2dB/dB Sampling Point: 16k to 128k Sampling Resolution: Approx. 0.05-8m / 0.05-8.75yd Reflection Accuracy:±3dB Data Storage: Internal: ≥Approx. 600m / 656yd External: Expandable Memory Card, up to 256G(Not Included) Laser Safety Level: Class Ⅱ level File Format: SOR Standard File Format Connector: FC/APC (Interchangeable SC, ST) OPM Parameters: Waveband: Approx. 800nm to 1700nm Interface Type: Universal Joint FC/SC/ST Test Range: -50dBm to +26dBm Uncertainty:±5% Frequency Identification:CW/270/330/1k/2kHz Calibration Wavelength: 850/1300/1310/1490/1550/1577/1625nm LS Parameters: LD Type: FP LD Output Wavelength: 1610nm±20nm Output Power:≥ -5dBm Modulation Frequency:270/330/1k/2kHz Stability: CW, ±0.5dB/15min (Test After15mins of Preheating) Connector: FC/APC (Interchangeable SC, ST) VFL Parameters: Working Wavelength: 650nm±20nm Output Power:≥10mW Mode: CW/1Hz/2Hz Connector: FC/SC/ST RJ45 Cable Length Measurement: Test Range: Approx. 300m / 328yd Other Parameters: Display:3.5 Inch Color LCD Monitor Data Interface: Micro USB Built in Battery: 4000mAh Lithium Battery (Included) Endurance: Standby Time>20h, Measurement Time>12h Operating Temperature:-10℃ to +50℃ Storage Temperature:-40℃ to +70℃ Relative Humidity: 0 to 95%Non Condensing Product Size: Approx. 173 x 82 x 37mm / 6.8 x 3.2 x 1.5in Function: OTDR/OPM/LS/VFL/RJ45 Sequence/ Insertion loss /Flashlight