3 in 1 Mini Fiber Optic Power Meter - with OPM (-70~+10 dBm), VFL (15mW) and RJ45 network testing functions, no need to bring separate testers, more convenient and efficient for your field work Specification for Optical Power Meter OPM Measurement Range: -70~+10 dBm Calibrated Wavelength: 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm Sensor Type: As Accuracy: ±0.2 dB Power Measurement Linearity: ±0.1 dB Display Resolution: ±0.1 dB Connector: Universal joint Specification for Visual Fault Locator VFL Output power: 15mw Range: 15-km@SM Connector: 2.5mm Universal Wavelength: 650nm±30nm Output modes: Continuous (CW), 1Hz/2Hz Power Source: Li-ion battery Colour:gray-white Material:plastic Package Contents: 1 x Optical Power Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.