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Hardware features
Hardware features of security DVRs vary between manufacturers and may include
but are not necessarily limited to
Designed for rack mounting or desktop configurations.
Single or multiple video inputs with connector types consistent with the
analogue or digital video provided such as coaxial cable, twisted pair or
optical fiber cable. The most common number of inputs are 1, 2, 4, 8, 16 and 32.
Systems may be configured with a very large number of inputs by networking or
bussing individual DVRs together.
Looping video outputs for each input which duplicates the corresponding input
video signal and connector type. These output signals are used by other video
equipment such as matrix switchers, multiplexers, and video monitors.
Controlled outputs to external video display monitors.
Front panel switches and indicators that allow the various features of the
machine to be controlled.
Network connections consistent with the network type and utilized to control
features of the recorder and to send and/or receive video signals.
Connections to external control devices such as keyboards.
A connection to external pan-tilt-zoom drives that position cameras.
Internal CD, DVD, VCR devices typically for archiving video.
Connections to external storage media.
Alarm event inputs from external security detection devices, usually one per
video input.
Alarm event outputs from internal detection features such as motion detection or
loss of video.
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