Feature:1. PORTABLE POWER METER: Handheld power meter with stable light source and high stability output power, featuring 3 modulation frequencies, useful and practical2. UNIVERSAL INTERFACE: Optical power meter equipped with a 2.5mm interface, including SC connectors, ideal for telecom and cable TV maintenance and testing3. SHOCKPROOF DESIGN: Fiber optic tester external protective layer is made of black soft rubber shell effectively prevent damage from drops or collisions4. ACCURATE DETECTOR: Power meter with for InGaAs detector type, wavelength response range of 8501650nm, measuring range of 70 to +10dbm, accuracy of 2dB5. VERSATILE USAGE: Light power meter feature universal connectors FC, SC, ST, 3 x AAA batteries(not included), operating temperature 10 to +60, and frequency recognition of 270, 330, 1k, 2kHzSpecification:Item Type: Optical Power MeterDetector Type: For InGaAsWavelength Range: 850-1650nmMeasurement Range: -70 to +10dbmResolution: 0.01dBAccuracy: 2dBConnector: Universal connector FC, SC, STBattery Type: 3 x AAA batteries(not included)Operating Temperature: -10 to +60Frequency Identification: 270, 330, 1k, 2kHz.Package List:1 x Fiber Optic Power Meter