Features 4 In 1: This multifunctional optical power meter combines optical power meter, fault location, network alignment, and LED lighting in one device. Wide Application: This multifunctional optical power meter is widely used in fiber optic cable construction and maintenance, fiber optic communication, fiber optic cable sensing, optical CAT and other fields. Ergonomic Body Design: The body of this multifunctional optical power meter is ergonomically designed with advanced cold molding process, which is beautiful and durable. Multifunctional: This multifunctional optical power meter has the function of automatic switch on and off, adjustable power, wavelength memory function, automatic identification of working frequency, support for illumination, storage and so on. Single Chip Microprocessor: This multifunctional optical power meter is controlled by a single chip microprocessor and is fully functional. Specification: Item Type: Optical Power Meter Material: ABS Wavelength Range: 800 to 1700 Detector Type: InGaAs Measurement 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 Recognition: 0Hz, 270Hz, 1000Hz, 2000Hz RJ45 Wire Searching 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 Meter Measurement) Battery : Rechargeable Lithium Battery 1100mAh x 1 ( Shipped With Built In Battery ) Package List:1 x Multifunctional Optical Power Meter1 x USB Cable1 x Portable Rope1 x Ceramic Tube1 x Manual Package List 1 x Multifunctional Optical Power Meter 1 x USB Cable 1 x Portable Rope 1 x Ceramic Tube 1 x Manual