Optical power +10-12 km red + lithium battery + USB charging + save real-time clock + data + management software + user self-calibration + ...... the use of a machine, a perfect match, the best choice of optical fiber construction and maintenance staff. 
 1 features: 
 (2), the combined optical power meter 10-12km red light. 
 (3), the new user calibration function. 
 (4), multi-wavelength precision measurement. 
 ? the number of power measurements in dBm or linear power measurement μw. And display the same screen. 
 ? relative power measurement dB. 
 ? real-time clock function can display the current time in real time. Recording time to store data. 
 ?, 255 set of test data storage. 
 ? handheld ergonomic design, dot matrix LCD display, easy to use. 
 ? the LED backlight display. 
 ? optional switch backlight display, the backlight off automatically 60 seconds off the backlight. 
 ? rapid response, without preheating. 
 A functional technical indicators 
 Wavelength range (nm) 800 ~ 1600 
 Detector InGaAs 
 Power Measurement range (dBm) -70 ~ +10 -50 ~ at +20 
 Uncertainty of ± 5% 
 Standard wavelength (nm) 850,980,1300,1310,1490,1550 
 Display Resolution Linear display: 0.1% of the number of display: 0.01dBm 
 Operating Temperature (℃) -20 ~ to +70 
 Storage Temperature (℃) -30 ~ +80 
 Auto-off time (min) 3 
 Battery time (h) 260 (backlight off) 
 Dimensions (mm) 175 * 79 * 46 
 Power high-capacity rechargeable lithium battery, 3.7V1600mAH. 
 Weight (g) 260 
 Red light indicators 
 Operating wavelength of 650nm ± 10nm 
 Light the FP-LD laser 
 Output power of 1mW, 3mW, 5mW, 10mW optional 
 Connect the 2.5mm the FC / PC universal adapter 
 Operating mode CW continuous light or modulated light