1、FOUR FUNCTIONS: This is a 4 in 1 multi functional optical time domain reflectometer(OTDR), including OTDR 1310 1550nm and 22 20dB 60km 6.3mi test distance, Visual fault locator(VFL) 650nm and 10km 6.3mi, Optical fiber power meter(OPM) 800~1650nm and ‑50~+26dBm, and light source(OLS) 1310 1550nm, are the most cost effective OTDR 2、CLEAR DISPLAY: The 4 in 1 OTDR uses a large 3.97in IPS touch screen with 800x480 pixels, which is clearly readable in outdoor sunlight, very practical 3、FLEXIBLE AND EDITABLE: OTDR fiber optic tester support data saving Sor format, keyboard input, can edit save file name and line number, more convenient 4、PORTABLE COMPLETE SET: OTDR test distance up to 60km, equipped with lanyard, power cord, storage bag, convenient for you to carry and use at outdoors 5、EXCELLENT PERFORMANCE: Optical time domain reflectometer is made with fine workmanship, possess compact appearance and stable performance, can make sure durability and stability Item Type: Optical Time Domain Reflectometer OTDR Part: Wavelength(nm): 1310 or 1550nm Dynamic Range: 24 or 22dB Test With Light: Not supported Measuring Distance: 0-60km Fiber Type: 9/125um SM Interface Type: FC PC; SC PC Laser Peak: >=30mW Display Units: Meters, feet, miles Reflection Event Blind Area: 2m Depletion Event Blind Zone: 12m Measurement Accuracy(reflection event): About ±(1m+2 x 10(-4) x distance) Number of Test Records Saved: 200 Visual Fault Locator(red light): Wavelength(nm): 650nm Output Power: ≥10mW Output Mode: CW, 1Hz, 2Hz Test Fiber Type: SM, MM Optical Power Meter: Measuring Range: -70 ~ +10dBm; -50 to +26dBm Wavelength Range(nm): 800 ~ 1650 Test Wavelength(nm): 850, 1300, 1310, 1490, 1550, 1625 Detector Type: For InGaAs Measurement Accuracy: <±3%(-10dBm, 22℃) Resolution: Linearity: 0.1%, Nonlinearity: 0.01dBm Light Source: Laser Type: FP-LD Output Wavelength(nm): 1310 or 1550nm Output Power: ≥-5dBm Output Stability(dBm): ±0.04 at 20℃ at 15min Output Frequency: CW, 270Hz, 1KHz, 2KHz Test Fiber Type: SM Others: LCD: 3.97in, 800 x 480 pixels, IPS, touch screen Battery: 1 x 7.4V lithium ion battery 4400mAH >5000 tests Temperature: Test Temperature: -5 ~ 50℃, Storage Temperature: -10 ~ 60℃ Humidity: 0 ~ 85%(non condensing) 1 x Reflectometer 1 x User Manual 1 x Lanyard 1 x Power Cord 1 x Storage Bag