Egomall Fiber Optic Cable Tester Visual Fault Locator Portable Optical Power Meter Sc and Fc Connector Fiber Tester The latest AUA-80A ultra thin light power meter red light source. Test precision, fine workmanship, easy to carry, completely replace the optical power meter and red pen 2 products. Come with English manual Light power red light source one machine function: can measure 850/980/1300/1310/1490/1550/1625nm and other 7 wavelength of the optical absolute power, test range: -70dBm~+10dBm; 1MW red light source can measure the distance is about 5 kilometers, completely replace the optical power meter and red pen 2pcs products. It can work for 40 hours with 2 AA Batteries(Not Included), the batteries are replaceable, automatic shutdown Linear and non-linear with same display screen,alternatively steady / strobe red light source. Lifetime warranty , feel free to contact us while you have questions about this product