With 6 optic wave lengths for selection, this compact and portable optical power meter is easy to operate with comfortable grip, specially designed for professionals who amount and maintain the fiber optic network. Features: - 6 optic wave length for selection, including 850nm, 1300nm, 1310nm, 1490nm, 1550nm and 1625nm. - Universal optic interface design, FC converter for FC/SC/ST interface. - Reading unit switching between absolute power and relative power. - Battery volume display, reminding you to replace batteries in time. - 10 minutes auto power off to save power. (This function can be set off.) - Light weight mini size low power consumption. - Widely applicable to optic fiber engineering, optic fiber sensor research, optic elements production, optic elements research, etc. Specifications: Material: ABS Color: Yellow Power Supply: 2 * 1.5V AAA battery (NOT included) Measuring Range: -70~+6dBm Wavelength: 850nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm Resolution: 0.05 Accuracy: ge;-48dBm, plusmn;2dBm; le;-48dBm, plusmn;3.5dBm Operation Environment( ge;-48dBm): 0~40(32~104), 5~95% Operation Environment( le;-48dBm): 0~32(32~89.6), 5~80% Storage Environment: 0~40(32~104), 5~95% Auto-off: 10 minutes Item Size: Approx. 11.5*3.3*1.8cm / 4.53*1.3*0.71in Item Weight: Approx. 35g / 1.23oz Package Size: Approx. 17.7*14.8*3.5cm / 6.97*5.83*1.38in Package Weight: Approx. 77g / 2.72oz Note: Please read the Users Manual before use. Packing List: 1 * Optical Power Meter 1 * Users Manual (English)