Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 1. 3 in 1 function: optical power meter + visual fault locator + network cable test. Support SC/FC/ST connector, Battery Type A -70-+3db 2. 6 choices of different wavelengths: 850/1300/1310/1490/1550/1625 nm 3. Optical power visual fault location integrated machine is mainly used for continuous optical signal power measurement and fiber line continuity test 4. Optional switch for backlight display, automatic shutdown function, support for manual calibration, support for lighting, and automatically save wavelength 5. Small size, light weight, easy to carry and use. The operation of the cable test function: long press the UNIT key for 3 seconds to open the RJ45 test mode, and then press to close the RJ45 test mode. Wavelength range: 800 ~ 1700 Probe type: InGaAs Red light working wavelength: 650nm Red light power: more than 5nw Instrument size: 118x68x30mm Working temperature: -25~+70 Auto light machine time: 10 minutes Battery continuous working time: more than or equal to 48 hours Power supply: 2 x AAA batteries colour: orange Material: ABS Package Contents: 1 x Optical fiber network cable tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.