| Sandia Lightwave Fiber Optic and Low Voltage Specialists the source for quality high speed voice and data communications cabling and wireless installations for customer satisfaction. Sandia Lightwave Fiber Optic and Low Voltage Specialists Welcome to Sandia Lightwave, Inc. (SLI). At SLI, we specialize in Fiber Optic, Low Voltage and Wireless Services. SLI is your source for unparalleled quality installations of High Speed Data and Voice Cabling, Wireless Communications and IP Video.. |