General description Optical Power Meter is a versatile Fiber Optic Cable Tester designed to accurately assess the signal transmission of network cables. It features a wavelength memory function that retains the last set wavelength even after shutdown, ensuring convenience for users. The device includes a backlight feature that can be toggled on or off, as well as an LED flashlight for inspections in low-light conditions. Additionally, it allows for automatic adjustment of test references based on actual testing requirements. 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 * AAA batteries, 1.5 V, 250 mAh Item size: 130 * 63 * 29 mm / 5.1 * 2.5 * 1.1 in Item weight: 310 g / 10.9 oz Package size: 260 * 150 *