The camera requires a well regulated 12V supply capable of providing at least 2.5A. When choosing a supply, make sure it’s suitable to the environment in which it will be used. For example, a power supply suitable for use in an indoor observatory may not be suitable for outdoor field use. The connector is a standard 2.1mm jack plug with centre positive. If a battery is used, please ensure that the lead is fused at 2.5A or less and the correct polarity observed.