What is the Purpose of the Red LEDs around a CCTV Security Camera?
The small red lights around CCTV (Closed Circuit Television) cameras are typically infrared (IR) LEDs (Light Emitting Diodes). These IR LEDs are used for a specific purpose: to provide night vision or low-light visibility for the camera. You may also notice an LDR (Light Dependent Resistor) between LED lights used as a light sensor for dusk-to-dawn operation. This means the LEDs turn on in the evening and turn off in the morning by detecting sunlight.
- How to Install PoE IP CCTV Cameras with NVR Security System
- How to Install a CCTV Camera? CCTV Camera Installation with DVR
Here’s how the IR lights in a security camera work to provide night vision allowing it to capture clear images and footage in low-light or dark conditions.
Infrared light is outside the visible spectrum for humans, so the red glow emitted by these IR LEDs is not visible to the naked eye. However, CCTV security surveillance cameras are equipped with sensors that can detect and capture this infrared light. When the ambient light levels drop, the camera switches to night mode and activates the IR LEDs to illuminate the area with infrared light. This allows the camera to capture clear images and footage even in total darkness or low-light conditions.
The purpose of these IR LEDs is to light up the area in front of the camera in a way that is invisible to humans but still sufficient for the camera to capture images. This illumination helps the camera “see” in the dark, making it useful for monitoring areas at night or in poorly lit environments.
Indication of Active Mode & Surveillance
The glowing red LED lights around the camera indicate that the camera is in active surveillance mode and is recording the surrounding area for protection and security purposes.
The red glow you may see around the camera is a faint indicator that the IR LEDs are active. While it’s not visible to the human eye, some cameras may emit a subtle red light when these IR LEDs are turned on.
Now, you know that the small red lights around CCTV cameras are infrared LEDs that provide night vision capabilities for the camera, allowing it to record footage in low-light or no-light conditions.
- Why Do Prongs in Electrical Plugs Have Holes in Them?
- How Many Amps Will Flow in a Short Circuit Powered by a 120V, 20A Breaker?
- Why Earth Pin is Thicker and Longer in a 3-Pin Plug?
- Difference Between Socket, Outlet and Receptacle?
- Why are US Homes Wired Using Solid Wire rather than Stranded Wire?
- Stranded Wire vs Solid Wire. Which One is Best and Why?
- What Happens When an AC Line Touches a DC Line?
- Why Don’t Birds and Squirrels Get Electrocuted on Power Lines?
- What are the Colored Aerial Marker Balls on Power Lines For?
- Why Can’t a 12V Car Battery Electrocute You?
- What Happens if a Battery is Connected to the AC Supply?
- What Happens to the Battery with Reverse Polarity Wiring Connection
- Why Can’t We Store AC in Batteries instead of DC?
- Why Do Electronic Circuits Use DC Current instead of AC?
- Why A.C needs more insulation than D.C at same Voltage Level?
- Which Bulb Glows Brighter When Connected in Series and Parallel & Why?
- Why Does the Heating Element Glow but Not the Cord of Heater?
- Why are Stones laid in an Electrical Substation?
- Why a Transformer Can’t be Operated on DC Supply?
- What happens if You Connect a 3-Φ Induction Motor to 1-Phase Supply?
- What happens to the 3-Phase Motor When 1 Out of 3 Phases is Lost?
- What Happens if We Connect a Polar Capacitor the Wrong Way?
- Which One Kills – Current or Voltage and Why? Amps vs Volts
- Which One is More Dangerous And Why? AC or DC ?
- Which One is More Dangerous? 120V or 230V and Why?
- Is Lightning AC or DC ?