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1. 2 measure 8 standdard wavelengths 850/980/1300/1310/1490/ 1550/1625 , check range: -70dBm~+6dBm, 10mw red . 3 lighting,Support computerized shutdown,Support backlight selection, Support wavelenghth memory function,Support calibration. four /SC/ST 2 common interface,Support RJ45 testing,Support simultaneous disply of linear mW and non-linear index dBm. five gentle energy meter & VFL ,Test precision, advantageous workmanship, mushy to carry,completely update the optical calories meter and purple pen 2 products. Specifications: Material: plastic Size: eleven x 6 Color: Yellow Calibration Wavelength: 800~1700nm Optical Connector: /SC/ST typical interface Detector Type: InGaAs Measurement Range: -70 ~ 3dBm Accuracy: ±0 Standard wavelength: 850, 980, 1300, 1310, 1490, 1550, 1625nm Display resolution: mW: 0% ,dBm: zero VFL: 1mW 650nm Working temperature: -10~+60℃ Storage temperature: -25~+70℃ Auto off time: 10Min Red gentle power: 5mW Power: 2 x 7# Battery(without battery) Battery continual operating time: equivalent 48h Package Contents: 1 x Fiber Optical Power Meter 1 x Rope Only the above equipment content, other merchandise aren't included. Note: Light and sundry reveals can cause the color of the item in the photograph a bit different from the genuine thing. The dimension allowed error is +/- 1-3cm.