General description Accurately test whether a single network cable transmits signals normally. This Optical Power Meter features a wavelength memory function that retains the set test wavelength even after shutdown. It includes a backlight that can be toggled on or off for use in various environments, as well as an LED flashlight to assist with line inspections in dark areas. The device allows for automatic fit test reference based on actual testing requirements and is designed with encapsulated case protection to minimize damage from accidental drops. Technical specifications Test range: -70 to +6 dBm Wavelength range: 800 ~ 1700 nm Standard wavelengths: 850 nm, 980 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm, 1625 nm, 1650 nm Uncertainty: ±5% 650 m red light source (optional): 1 mW, 10 mW, 20 mW, 30 mW Display resolution: linear display 0.1%, logarithmic display 0.01 dBm Battery: 2 x AAA batteries, 1.5V, 250 mAh Item size: 130 x 63 x 29 mm / 5.1 x 2.5 x 1.1 in Item weight: 310 g / 10.9