Fiber Optic Trainer Numerical Aperture, Attenuation Loss And Bending Loss is an SSI India product in the FIBER OPTICS TRAINER KITS category. Key specifications include SKU: PFO-E477. In built IC based Fixed DC Regulated Power Supply 0-6VDC/150mA. Optical transmitter 660nM and 850nM. Optical Receiver PIN Photo Diode for 660nM and