Fiber Optic Characterization Kit Optical Source Characteristics And Power Measurement is an SSI India product in the FIBER OPTICS TRAINER KITS category. Key specifications include SKU: PFO-E212B. In built IC based Fixed DC Regulated Power Supply 0-6VDC/150mA. Optical transmitter 660nM and 850nM. Optical Receiver Photo Transistor for 660nM and 850nM.