Function: can measure 8 standdard wavelengths 850/980/1300/1310/1490/1550/1625/1650nm , test range: -70dBm~+10dBm; 10MW red light source can measure the distance is about 10-15 kilometers.
It can work for 40 hours with 2 AA Batteries(Not Included), the batteries are replaceable.Support automatic shutdown?Support backlight selection.
Support linear mW and nonlonear index dBm simultaneous dusply. Support user self-calibration.Support restore factory settings. Support FC?SC?ST interfaces.
The light power meter & VFL ,Test precision, fine workmanship, easy to carry, completely replace the optical power meter and red pen 2 products. Come with English manual
Warranty: Lifetime Friendly Customer Service,5 years warranty,60-day money-back guarantee