Welcome to our store! FAST AND ACCURATE: This three-in-one power meter is equipped with a highly sensitive chip that provides fast and accurate measurements, requiring no warm-up time – just plug and go. ADVANCED FEATURES: This multifunctional tester boasts a range of features, including relative power calculation, calibration, and an auto-off function for added convenience. WIDE WAVELENGTH COVERAGE: With a wavelength range of 850 to 1650 nm, this optical power meter caters to most communication technology maintenance needs. LONG LIGHT DISTANCE: Utilizing a red light source, this optical power meter detects faults up to 15 km away, making it a highly effective tool for quickly and efficiently locating issues. RJ45 NETWORK TEST: In addition to its power testing capabilities, this device also includes an RJ45 network testing function, allowing you to quickly check and correct network cables. Item Type: Optical Fiber Power Meter Material: ABS Red Light Source Detection Distance: 15 km Power Supply: Requires 2 x AAA batteries (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 Operating Temperature: -10℃ to +60℃ Storage Temperature: -25℃ to +70℃ Automatic Shutdown Time: 10 minutes Battery Continuous Operating Time: Not less than 40 hours 1 x Optical Fiber Power Meter 1 x Lanyard 1 x User Manual Customers are our top priority. If you encounter any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.