Low voltage technicians are electrical professionals who install and maintain low voltage wiring systems such as alarm systems, security systems, and fire alarms. Low voltage is generally considered to be less than 50 volts, with little or no risk of fire or shock. Examples include telephone, local area network, and on-site fiber optic network systems. Low voltage technicians are specially trained to work with the wiring for these voltage ranges and systems. Low voltage technicians can work alone, or in teams, to rewire and work in old homes, new home construction, and industrial and commercial buildings.