CCTV Camera Symbol

Definition: The CCTV Camera symbol represents a fixed surveillance camera — drawn as a trapezoid camera body with a lens circle and mounting line — with power terminals (12V+/PoE, GND) and a Data terminal for the video/network connection, powered either by 12 V DC per camera or by Power over Ethernet per IEEE 802.3af/at, and installed under NEC Article 725/800 low-voltage rules.

Also known as: security camera, IP camera, PoE camera, surveillance camera, bullet camera, dome camera, analog HD camera, network camera.

What the CCTV Camera symbol means

The CCTV Camera symbol denotes a video surveillance endpoint on a security plan or wiring diagram. Two electrically distinct families share the symbol. Analog HD cameras (HD-TVI, HD-CVI, AHD) send video over coaxial cable to a DVR and take separate 12 V DC power — their diagrams show a coax Data run plus a two-conductor power pair, often combined in 'siamese' RG59+18/2 cable. IP network cameras (the Hikvision/Dahua class that dominates modern installs) send compressed video as network data over Cat5e/Cat6 to an NVR or switch, and usually take power on the same cable via Power over Ethernet.

The symbol's three pins summarize both worlds: power positive (12V+ or PoE), power negative/ground (GND), and Data (coax or network). On plans, the camera symbol is repeated per camera with an ID (CAM-01, CAM-02) and its field of view sometimes drawn as a shaded wedge; the wiring diagram's job is to show each camera's home run back to the DVR/NVR/switch and how it is powered.

How to identify the CCTV Camera symbol

The camera is drawn as a small trapezoid or rectangle (the body) with a circle on its front face (the lens) and a short line or bracket indicating the wall/ceiling mount — a pictorial symbol rather than an abstract IEC glyph, because neither IEC 60617 nor ANSI Y32.2 defines a camera primitive. Dome cameras are sometimes drawn as a semicircle on a ceiling line; PTZ (pan-tilt-zoom) cameras add rotation arrows.

On the wiring side, identify the family by the cabling drawn: a single Cat5e/Cat6 line to a PoE switch or NVR means an IP camera; a coax line to a DVR plus a separate 12 V pair from a multi-output CCTV power supply means analog HD. Security-industry drawings often follow NFPA 731 or manufacturer CAD-block conventions, and label each run with cable type and length — the length matters, because both PoE (100 m) and 12 V DC (voltage drop) have hard distance limits.

Function in a circuit

An IP camera is a small network computer: its sensor and encoder compress video (H.264/H.265) and stream it over Ethernet, while the same RJ45 connection carries power injected by a PoE switch or NVR port. Standard PoE (IEEE 802.3af, Type 1) delivers up to 15.4 W at 44–57 V from the source — ample for fixed cameras drawing 4–8 W; PoE+ (802.3at, 30 W) covers PTZ motors, heaters, and IR-heavy models. Using 44–57 V on the cable instead of 12 V is what makes 100 m runs feasible with negligible loss.

An analog HD camera is simpler: the sensor modulates video onto coax back to the DVR, and a separate 12 V DC feed (from a plug-pack or a multi-output 12 V supply panel) powers it. Voltage drop governs the power run: a camera drawing 500 mA over long thin pairs can sag below the typical 12 V ±10% tolerance, causing night-time reboots when IR LEDs kick in and double the draw. Both families are Class 2 low-voltage circuits under NEC 725, keeping the cabling out of line-voltage rules; outdoor runs need wet-rated cable and drip loops, and cameras carry IP66/IP67 weather ratings and IK vandal ratings.

Standards: IEC vs ANSI

Terminals / pins

Typical values

IP cameras: 4–8 W typical (fixed lens), 12–25 W for PTZ/heated models; PoE per IEEE 802.3af (15.4 W, 44–57 V) or 802.3at (30 W); Cat5e/Cat6 runs to 100 m (328 ft). Analog HD: 12 V DC ±10% at 300–800 mA (IR on), RG59 runs to roughly 300 m for 1080p TVI/CVI. Resolutions run 2 MP (1080p) to 8 MP (4K); IR illumination ranges 20–80 m. Outdoor housings rate IP66/IP67 and IK08–IK10; operating ranges of −30 to +60 °C are typical. A 4-camera IP kit totals well under 60 W — one small PoE switch or NVR handles it.

Where the CCTV Camera symbol is used

• Residential perimeter surveillance — driveway, front door, and yard cameras home-run to a PoE NVR in a closet
• Retail and small-business interiors, mixing dome cameras (vandal-resistant, discreet) with bullet cameras at entries
• Warehouse and yard coverage using PTZ and long-range IR bullets on PoE+ or 24 V AC feeds
• Multi-dwelling and estate installations with cameras at gates, tied into the gate operator and intercom system
• Farm and remote-site monitoring over point-to-point wireless bridges with solar-powered camera poles
• Analog HD retrofits reusing existing RG59 coax from legacy CCTV systems with a TVI/CVI DVR

Example

In a four-camera home surveillance diagram, camera CAM-01 (a 4 MP IP bullet over the garage) connects by a single Cat6 home run — its Data pin and PoE power pin sharing the RJ45 — to port 1 of the PoE NVR in the hall closet, a 55 ft run well inside the 100 m limit. Its GND reference and 48 V PoE supply both originate at the NVR port per IEEE 802.3af, so the camera end needs no local power outlet; the NVR itself plugs into a UPS so recording rides through short outages.

Key facts

• Two electrical families share the symbol: IP cameras (data + power over one Cat5e/Cat6 via PoE) and analog HD cameras (video over coax + separate 12 V DC power).
• PoE per IEEE 802.3af delivers 15.4 W at 44–57 V up to 100 m — enough for typical 4–8 W fixed cameras; PTZ and heated cameras need 802.3at (30 W).
• Analog 12 V cameras are voltage-drop-sensitive: IR LEDs at night can double current draw and push a marginal run below the 12 V ±10% window, causing nightly reboots.
• Camera circuits are NEC Class 2 / SELV low-voltage wiring; outdoor runs need wet-location cable, drip loops, and IP66/IP67-rated cameras.
• ONVIF profiles let IP cameras and recorders from different vendors interoperate; check Profile S support when mixing brands.
• RG59 coax carries 1080p HD-TVI/CVI roughly 300 m — much farther than Ethernet's 100 m — which is why analog HD survives in long-run retrofits.
• NDAA Section 889 bars certain manufacturers (including Hikvision and Dahua) from US federal-funded projects — a spec item, not a technical one.
• Every camera should be labelled and home-run: the diagram convention is CAM-nn IDs with cable type and length noted per run.

Frequently asked questions

What is the difference between a PoE camera and a 12V camera?

A PoE (IP) camera receives both power and network data over one Cat5e/Cat6 cable from a PoE switch or NVR, at 44–57 V per IEEE 802.3af/at — one cable, 100 m reach, negligible voltage drop. A 12 V camera (usually analog HD) needs two separate paths: coax for video to the DVR and a 12 V DC pair from a power supply, with voltage drop limiting practical power-run length. PoE is the default for new installs; 12 V analog persists in retrofits.

How far can I run cable to a security camera?

Ethernet/PoE: 100 m (328 ft) per TIA-568 channel limits — beyond that use a PoE extender, a mid-span switch, or fiber. Analog HD over RG59 coax: roughly 300 m at 1080p. The 12 V DC power side is the tight constraint on analog: at 500–800 mA, thin pairs drop below spec within 30–60 m, so long analog runs use heavier conductors, 24 V AC cameras, or local power.

What does the camera symbol look like on a security plan?

A small trapezoid or rectangle body with a circle for the lens and a line for the mount, pointing in the camera's aim direction — often with a shaded wedge showing field of view and an ID like CAM-03. Dome cameras may appear as a semicircle on the ceiling line; PTZ cameras get rotation arrows. There is no formal IEC/ANSI camera glyph, so legends on the drawing define the exact style.

Do I need an NVR or a DVR?

An NVR (network video recorder) records IP cameras over Ethernet and usually includes PoE ports — choose it for new Cat5e/Cat6 installs. A DVR (digital video recorder) digitizes analog HD video arriving on coax — choose it when reusing existing RG59 cabling. Hybrid recorders accept both. The camera type dictates the recorder, not the other way around.

Why does my camera go offline at night?

The classic cause is power starvation from IR load: at night the infrared LEDs switch on and can double the camera's current draw. On a marginal 12 V run the added drop sags the supply below tolerance and the camera brown-outs and reboots — repeatedly. Fixes: heavier power conductors, a supply closer to the camera, 24 V AC or PoE conversion. On PoE, the same symptom points to an underpowered switch port (use 802.3at for IR-heavy or PTZ models).

Can I plug a PoE camera straight into my router?

Only if the router or switch port actually supplies PoE — most home routers do not. Options: a PoE-capable switch, a single-port PoE injector inline with the camera's cable, or an NVR with built-in PoE ports. The camera negotiates power per IEEE 802.3af/at; a non-PoE port will link data but the camera will stay dead without a separate 12 V supply (many IP cameras retain a 12 V barrel jack as an alternative).

Related symbols

• Doorbell Camera symbol
• Motion Sensor symbol
• Industrial Network Switch symbol
• PIR Motion Sensor symbol
• Power Supply 24V DC symbol
• RJ45 / Ethernet Connector symbol

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