What Does CCTV Stand For? Complete Security Camera Guide
CCTV stands for Closed-Circuit Television—a video surveillance system where cameras transmit signals to specific monitors rather than broadcasting publicly like broadcast television.
Why "Closed-Circuit"?
The term "closed-circuit" means the video signal travels in a closed loop between cameras and recording/viewing devices. Unlike broadcast TV that anyone can receive, CCTV signals are only viewable by authorized users with access to the system.
How CCTV Differs from Broadcast TV
- Broadcast TV: Signal transmitted openly via airwaves—anyone with a TV/antenna can receive
- CCTV: Signal transmitted privately via cables or encrypted wireless—only connected monitors/devices receive
How CCTV Systems Work
Basic Components
- Cameras: Capture video footage of monitored areas
- Cables/Wireless: Transmit video signal from cameras to recorder
- DVR/NVR (Recorder): Stores video footage on hard drives
- Monitor/Smartphone: Displays live and recorded video
Signal Flow
Camera → Cable/Wireless → Recorder → Storage → Monitor/Phone App
Types of CCTV Systems (2025)
1. Analog CCTV (Traditional)
- Cameras connect via coaxial cables to DVR
- Resolution: 720p-1080p maximum
- Lower cost but dated technology
- Being phased out in favor of IP systems
2. IP CCTV (Modern Standard)
- Cameras connect via network cables (Cat5e/Cat6) to NVR
- Resolution: Up to 4K (8MP) and beyond
- Remote viewing via internet/smartphone apps
- Advanced features: AI detection, facial recognition
- Most popular choice for Perth homes/businesses
3. Wireless CCTV
- Cameras connect via WiFi to NVR or cloud
- No cables required (except power)
- Easy installation, flexible positioning
- Suitable for rentals, temporary setups
Common CCTV Camera Types
Dome Cameras
Vandal-resistant, 360° rotation, ideal for indoor/outdoor ceiling mounting. Popular in Perth businesses.
Bullet Cameras
Long-range, weatherproof, visible deterrent. Common for Perth driveways, perimeters.
PTZ Cameras (Pan-Tilt-Zoom)
Remote control movement, optical zoom. Used for large Perth properties, car parks.
Turret Cameras
Compact dome-style, easy angle adjustment. Increasingly popular for Perth residential.
CCTV vs Modern Security Cameras
While "CCTV" technically describes closed-circuit systems, the term is often used interchangeably with "security cameras" today. Modern differences:
- Traditional CCTV: Analog cameras, local recording only, monitor viewing
- Modern IP Cameras: Network-connected, cloud storage options, smartphone apps, AI features
- Both are "closed-circuit" (private systems) but technology has evolved significantly
Benefits of CCTV Systems
- Crime deterrence: Visible cameras reduce burglary risk by 60%+
- Evidence collection: Video footage helps police identify criminals
- Remote monitoring: Check property from anywhere via smartphone
- Insurance discounts: 10-15% premium reductions with professional CCTV
- Employee monitoring: Business productivity and theft prevention
- Peace of mind: Know your property is protected 24/7
Get Professional CCTV Installation in Perth
Great White Security specializes in modern IP CCTV systems for Perth homes and businesses. We'll design the perfect closed-circuit system for your property with 4K cameras, remote viewing, and professional installation.