ZOOM 2 Dual 850nm Laser 1310 Multimode/Single Mode Fiber Test Kit, ST ConnectorsDescription Single Mode Multimode Fiber Test Kit The ZOOM II Dual 850 Laser 1310 Test Kit is ideal for LAN managers and installers who need to do simple attenuation tests on their multimode and single mode networks. The ZOOM II (Zeroed Output Optical Meter) is an economical fiber optic power meter. It provides accurate testing of multimode fiber cables. The 4 digit 7 segment LED display shows power readings with a resolution of 0. 01dB. On screen