Small size and light weight, making it easy to carry. Weight: 120 g Operating Temperature (°c): -10 ~ +60 Power: 2 AAA batteries (not included) 100% brand new and high quality Measurement Range: -70~+10 dBm Detector Type: InGa As Product Name: Optical Power Meter (3 in 1) Material: Plastic Power Linearity: ±0.1 dB Can store up to 500 sets of data. Display Resolution: ±0.1 dB Durable and drop-resistant. Wavelength: 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm Supports user calibration. Supports backlight selection and auto-off. Dimensions (mm): 113 x 63 x 26 Storage Temperature (°c): -25 ~ +70 High measurement accuracy, measurement error is less than ±0.2dB. * The optical mini tester can measure 10 standard wavelengths: 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm, with a test range of -70dBm to +10dBm. * Easily identify fiber breakpoints, bad connections, bends, or cracks. Excellent for finding the right fiber to splice or quickly locating a break. * The 2.5mm universal connector on this fiber tester is compatibly designed for ST, SC, FC connectors in both circular and square shapes for various fiber optic cables. * The 3-in-1 function includes an optical power meter, RJ45 network tester, and LED illumination. The flashlight can illuminate dark environments. Uses 2 AAA batteries (not included). * Widely used in optical cable construction and maintenance, optical fiber communication, optical cable sensing, optical CATV, and other fields. Package included: Fiber Optic Cable Tester Notes: 1. Due to the different monitor and light effect, the actual color of the item may be slightly different from the color shown on the pictures. 2. Please allow 1-3 cm measurement deviation due to manual measurement.