Welcome to our store! This 4-in-1 Multifunctional Optical Power Meter combines optical power measurement, fault location, network alignment, and LED lighting in a single device. Widely used in the construction and maintenance of fiber optic cables, fiber optic communication, fiber optic cable sensing, optical CATV, and other fields. Ergonomically designed with an advanced cold forming process, making it both beautiful and durable. Features automatic power on/off, adjustable power, wavelength memory, automatic work frequency identification, lighting support, and storage. Controlled by a single-chip microprocessor for full functionality. Key Features: Wavelength Range: 800 to 1700nm Detector Type: InGaAs Measuring Range: -70~+6dBm Uncertainty: ± 5% Standard Wavelength: 850nm, 980nm, 1270nm, 1300nm, 1310nm, 1490nm, 1550nm, 1577nm, 1625nm Display Resolution: Linear Display: 0.1%, Logarithmic Display: 0.01dBm Red Light Operating Wavelength: 650nm Test Range: 5KM Frequency Identification: 0Hz, 270Hz, 1000Hz, 2000Hz RJ45 Wire Tracking Distance: Approx. 200m/7.87in Input Voltage: 3-6V Operating Temperature: -10-+60°C Storage Temperature: -25-+70°C Automatic Shutdown Time: 10min Battery Continuous Working Time (h): ≥48 (Single Power Measurement) Battery: Rechargeable Lithium Battery 1100mAh x 1 (Built-in) Package Includes: 1 x Multifunctional Optical Power Meter 1 x USB Cable 1 x Portable Rope 1 x Ceramic Tube 1 x Manual Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!