Optical Power Meter Visual Fault Locator LCD Display OTDR Fiber Optic Cable Tester 100‑240V US Plug Item Type: Optical Power Meter Model: 1550 Radio Television Edition Optical Fiber Testing Wavelength: 1310, 1277, 1490, 1577, 1625 Standard Optical Power Meter: Digital Wavelength Range: 800-1600nm Probe Type: For InGaAs Power Measurement Range: -50-26dBm Measurement Accuracy: 5% Display Resolution: 0.1dBm Fiber Category: Single Mode Fiber Optic Interface: SC Red Light Source: Working Wavelength: 650nm Light Emitting Device: FP-LD Output Power: 10mw Modulation: 0HZ, 1HZ, 2HZ Fiber Category: Single Mode Fiber Optic Interface: SC Stable Light Source: Working Wavelength: 1550nm or 1610nm Light Emitting Device: FP-LD Output Power: -10dbm Modulation: 270HZ, 1K 2K Fiber Category: Single Mode Optical Loss Test: Fiber Optic Interface: SC Test Range: 0-30db Measurement Accuracy: 10% OTDR: Laser Tube: 1550nm or 1610nm Detection Diode: Avalanche APD Measurement Resolution: 0.6 meter Event Blind Spot: 3 meters Attenuation Blind Spot: 10 meter Test Pulse Width: 10, 30, 100, 300ns, 1, 3 6us Scattering Depth: 20db (6us) Test Length (Event): 60km Test Length (Attenuation): 30km Power Supply Method: 1 x 4000MAH Lithium Battery (built in battery) Power Adapter: Micro USB 5V 1000mA Maximum Single Current: ≤200mA Standby Current: ≤10uA Battery Continuous Working Time: ≥10H Automatic Shutdown Time (min): Adjustable Working Temperature: -10-50℃ Storage Temperature: -25-70℃