2-wire video door intercom systems carry both power and audio-video signals over a single twisted pair between the door
Media converters for IP cameras convert between RJ45 Ethernet and SC or ST fiber optic connectors for long-distance came
Network Video Recorders use standard SATA data and power connectors to interface internal hard drives for video storage,
CCTV cameras use 5.5mm x 2.1mm or 5.5mm x 2.5mm DC barrel plugs for 12V power supply connections, with the center pin po
Digital security keypads connect to alarm panels via RS-485 4-wire or 2-wire buses for PIN code entry remote arming and
External siren and strobe connectors use 4-wire connections for tamper circuit, strobe power, and siren power, with sepa
4-wire conventional smoke detectors use separate power and alarm circuits allowing detectors to be reset from the panel
Glass break acoustic detectors use a 4-wire connection for power, ground, and relay output to signal when glass breakage
Passive Infrared (PIR) motion detectors use a 3 or 4-wire connection for power, ground, tamper, and relay output to conn
Electric door strikes replace the fixed strike plate with a motorized version that releases when powered, allowing doors
Electromagnetic door locks (maglocks) use a 2-wire connection for 12V or 24V DC power that magnetizes the armature plate
Wiegand 26-bit protocol is the standard for access control card readers connecting to access control panels using 4-wire
PTZ (Pan-Tilt-Zoom) cameras use RS-485 2-wire half-duplex terminal connections for receiving Pelco-D or Pelco-P control
IP surveillance cameras connect via standard RJ45 Ethernet for H.264/H.265 video streaming while receiving power from Po
HD-TVI (High Definition Transport Video Interface) carries 1080p to 4K analog HD video over standard RG-59 coaxial cable