1、[2 in 1 Fiber Tester] This fiber tester combines optical power meter and visual fault locator functions in one device, eliminating the need for separate equipment and offering greater convenience. 2、[USB Rechargeable] Equipped with a rechargeable battery and USB charging port, this optical power meter eliminates the need for battery replacement. The automatic shutdown feature ensures extended working and standby time. 3、[High Accuracy] With a high accuracy of ±0.2 dB and high linearity of ±0.1 dB, this fiber tester delivers stable and accurate measurement results for dependable performance. 4、[Versatile Usage] With universal 2.5mm interface and FC SC connectors, this optical power meter is ideal for telecom and cable TV maintenance testing, offering flexibility and compatibility. 5、[User Friendly] Encased in a rubber shell, this fiber optic cable tester provides enhanced safety for the device while improving the grip and comfort during use. Item Type: Optical Power Meter with VFL Material: ABS Detector Type: InGaAs Applicable Range: Single, Multi Mode Fiber Calibration Wavelength (nm): 850, 1300, 1310, 1490, 1550, 1625 Measurement Range (dBm): -70~+10 Display Units: mW uW nW dBm dB Light Emitting Device: FP LD Operating Wavelength (nm): 650 Output Optical Power Typical Value (mW): >10 Red Light Flashing Frequency: Yes, Frequency is 2Hz Battery: Li Battery x 1 (Built in) Auto Power Off Time: 10 Minutes Continuous Working Time: >200 Hours (Single Optical Power Meter Operation) ≥ 50 Hours (10mW red light source and optical power meter working simultaneously) Optical Interface: Optical Power Meter Module: Interchangeable FC and SC Head Red Light Source Module: 2.5mm Universal Interface Operating Temperature (℃): 10~+50 Accuracy: <±3% (-10dBm, 22℃) Resolution Linearity: 0.1%, Nonlinearity: 0.01dBm 1 x Optical Power Meter with VFL 1 x USB Cable 1 x User Manual 1 x Accessory 1 x Storage Bag