Features 1、Optical Power Meter: Handheld optical power meter, providing stable light source and power output, with 3 modulation frequencies, supporting 270Hz, 330Hz, 1kHz and 2kHz frequency recognition. 2、Applicable Range: The power is 5mw, the measurement range is ‑70‑10dbm, and the wavelength response range is 850‑1650nm. This fiber optic tester has high accuracy and provides reliable measurements. 3、Interfaces: The tester provides red light port and optical power port, with a universal 2.5mm red light source interface, including SC connector, making it an ideal telecommunications and fiber maintenance tester. 4、Sturdy and Practical: Equipped with an anti drop protective cover and a black soft rubber protective layer, it effectively prevents damage to the machine from falling or colliding, greatly extending its service life. 5、Battery Powered: This fiber optic tester has a built in lithium battery, with a large capacity of 800mAh to ensure lasting endurance, making it easy to charge and use at any time, suitable for more scenarios. Specification Item Type: Fiber Optic Tester Power Meter Detector Type: For InGaAS Wavelength Response Range: 850-1650nm Measurement Range: -70-10dbm Resolution: 0.01dB Accuracy: ±2dB Power: 5mw Connector: Red Light Port, Optical Power Port Battery Type: 1 x Lithium Battery (800mAh) (Built in) Operating Temperature: -10-60℃ Frequency Recognition: 270Hz, 330Hz, 1kHz, 2kHz Red Light Source Interface: 2.5mm Universal Package List 1 x Fiber Optic Power Meter 1 x USB Cable