Features: Can measure 8 standard wavelengths: 850/980/1300/1310/1490/1550/1625/1650nm, test : -70dBm~+6dBm. Supports FC/SC/ST universal interface, RJ45 testing, simultaneous disply of linear mW and non-linear index dBm. Wavelength memory function, can memorize test wavelength that set for last time before shutdown. Supports backlight function and auto shutdown function. Leds lighting function, convenient for wires inspection in dark environment. With protective housing, reduce loss to machine caused by collision to a certain extent. Small size, convenient to carry anywhere. Specifications: Material: plastics Color: orange Standard wavelengths: 850/980/1300/1310/1490/1550/1625/1650nm Test : -70dBm~+6dBm Auto shutdown time: 10mins Working time: 72h -supply: 2 * AAA-batterys (not included) Working temperature: -10~+60 Storage temperature: -30~+70 Item size: 112 * 66 * 30mm / 4.41 * 2.6 * 1.18in Package size: 112 * 66 * 30mm / 4.41 * 2.6 * 1.18in Package weight: 150g / 5.29ounces Note: 1.Due to different display screen and light effect, actual color of item might be slightly different from color showed on pictures. 2.Please allow a little measuring deviation due to manual measurement. 3. network test remote tool in picture is not included in product. Package List: 1 * Cable Tester 1 * Black String 1 * User Manual Can measure 8 standard wavelengths: 850/980/1300/1310/1490/1550/1625/1650nm, test range: -70dBm~+6dBm. Supports FC/SC/ST universal interface, RJ45 testing, simultaneous disply of linear mW and non-linear index dBm. Wavelength memory function, can memorize the test wavelength that set for the last time before shutdown. Supports backlight function and auto shutdown function. Leds lighting function, convenient for wires inspection in dark environment.