Features 1、FAST AND ACCURATE: No waiting to warm up, plug and play. Support ‑50~+26dbm measurement, relative power calculation, calibration function 2、SENSITIVE AND RUGGED: Sensitive chip and rugged internal structure. Low battery consumption, support 40 hours of continuous work 3、COMMON INTERFACE: 10 wavelength and light source, 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 and SC, ST, FC adapter. Covers most of the requirements of communication engineering maintenance 4、ENERGY SAVING AND ACCURATE: Using for InGaAs probe, realize accurate measurement, 10 minutes automatic shutdown, energy saving 5、SCRATCH RESISTANT ABS: Using excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly Specification Item Type: Mini Optical Fiber Power Meter Material: ABS Probe Type: For InGaAs Wavelength Range: 850-1650nm Standard Wavelength(nm): 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 Automatic Shutdown Time: 10 Minutes Power Measurement Range: -50~+26dBm Power Supply: 2 x AAA battery required(not include) Package List 1 x Optical Power Meter 1 x User Manual 1 x Lifting Rope