Optical Fiber Power Meter High Accuracy ‑70 to +10dBm Mini Optical Power Tester Supports SC FC ST Interfaces 5V Item Type: Optical Fiber Power Meter Material: ABS Wavelength Range: 800 to 1700 Probe Type: For InGaAs Measurement Range: -70 to +10 Uncertainty: ± 5% Standard Wavelength (nm): 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625 Display Resolution: Linear Display: 0.1% Logarithmic Display: 0.01dBm Frequency Identification (Hz): 270, 1000, 2000 Static Current: Less than or equal to 18uA Working Current: Less than or equal to 25mA Range Time: Greater than or equal to 20H Charging Voltage: 5V Charging Current: Less than or equal to 500mA Charging Duration: Less than or equal to 3H Automatic Shutdown Time (min): 10 Power Supply: Rechargeable lithium battery, external input Battery: Rechargeable lithium battery 400mAh x 1 [shipped with built in battery]