Features 1、3 IN 1 FUNCTION: Optical power meter, visual fault locator (VFL) and LED Light. 3.7V rechargeable li ionbattery power supply, TYPE C interface charging 2、TECHNICAL PARAMETERS: Fiber optic tester support 10 standard measurement wavelengths of 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650nm, test range from -50dBm~+26dBm 3、OUTSTANDING ADVANTAGES: Optical power meter tester with backlight display, 10 minutes without operating, the device will automatically shut down; with 500 sets of data storage 4、ACCURATE AND LOW ERROR: Optical power test error is less than 0.2dB; users can calibrate the data independently, practical and convenient, very dependable 5、EASY TO USE: Fiber optic multimeter is long lasting and fall resistant, small size, light weight, easy to carry, equipped with hanging rope Specification Item Type: Optical Power Meter Model: A-C510B Material: ABS Power Test Range: -50~+26dbm Probe Type: For InGaAs Wavelength Range: 850~1650nm Test Accuracy: ±0.2dB Standard Wavelength (nm) : 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 Display Resolution: Linear Display: 0.1%n Logarithmic Display: 0.01dBm Operating Temperature (℃): -10~+60℃ Storage Temperature (℃): -25~+70℃ Automatic Shutdown Time: 10 Minutes Red Light Source Test Distance: 50mW Output Wavelength: 650nm Product Size: Approx. 180 x 89 x 42mm / 7.09 x 3.5 x 1.65in Power Supply: 1 x 3.7V rechargeable lithium battery capacity 650mah Package List 1 x Optical Power Meter 1 x FC Adapter 1 x USB C Charging Cable 1 x User Manual