Spectrum is a Canadian manufacturer of DVR (digital video recorder) and NVR (network video recorder) systems. Spectrum now offers its latest technology to send secure live camera video signals over existing electrical wiring. No need to run new wiring to those difficult to reach areas such as elevator cabs, lampposts etc. Cut labor and material costs such as expensive wiring, conduit or trenching. This is not a toy product. This is a professional high quality product. Just plug and play. This is great for covert applications where cameras can be moved easily. Custom manufactured IP to analogue / analogue to IP converters and video distribution amplifiers. Distributor for various security, internet and broadcasting, video and audio peripheral devices. Spectrum also offers a Data Recovery Service for lost data on DVR/NVR, servers or computers. Make Spectrum Systems your number 1 shop stop.