Welcome to the store! FAST AND ACCURATE: This three-in-one power meter is equipped with a highly sensitive chip that provides fast and accurate measurements, without requiring any warm-up time, just plug and go. ADVANCED FEATURES: This multifunctional tester boasts a range of features, including relative power calculation, calibration, and an automatic shutdown function for added convenience. WIDE WAVELENGTH COVERAGE: With a wavelength range of 850 to 1650nm, this optical power meter caters to the majority of communication engineering maintenance needs. LONG LIGHT DISTANCE: This optical power meter utilizes a red light source to detect faults from up to 15km away, making it a highly effective tool for locating faults quickly and efficiently. RJ45 NETWORK TEST: In addition to its power testing functionality, this device also includes an RJ45 network testing feature, allowing you to quickly check and correct network cabling. Item Type: Optical fiber power meter Material: ABS Red light source detection distance: 15km Power supply: Requires AAA battery x 2 (not included) Probe range: InGaAs Wavelength range: 850-1650nm Standard wavelengths (nm): 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 Display resolution: Linear display: 0.1%, logarithmic display: 0.01dBm Working temperature: -10℃ to +60℃ Storage temperature: -25℃ to +70℃ Automatic shutdown time: 10 minutes Battery continuous working time: Not less than 40 hours 1 x Optical fiber power meter 1 x Lanyard 1 x User manual Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!