DC Power Plug for CCTV

12V DC Power Connector Plug Jack Male Female Socket Barrel 2.1mm x 5.5mm Adapter for CCTV Camera LED Strip Supply Terminal

* ✅Safety: Maximum 5A Current 1V-24V No Heat | Heavy Duty Inner Wire leads and Connecting Portion,10 Pair（10Pcs Male 10 Pcs Female) Adaptor | Can Handle 16-24AWG Gauge Wire
* ✅Premium Quality: Double Layer(Injection Moulding) Provide Best Polarity Connection and Insulation DC Electrical Connector connect wire lead end to a DC 2.1x5.5mm port
* ✅Installation: Tight Screw on Terminal | No-Soldering/Crimping Needed | Easy to Install,2.1mm x 5.5mm 5.5 x 2.1mm 12volt 12vdc barrel adapters jacks
* ✅Application: For 5V 12 V 24 V vdc Volt Power Supply CCTV Cable Connection Led Strip Extention Video Balun Security Tailgat Camera DIY Board
* ✅Sincere Service:If you have any question or want to know more, welcome to send email.

1. Common Specifications & Connector Types

• DC Plug Size:
  Most CCTV cameras use 5.5×2.1mm DC Power Plugs:

• Outer diameter: 5.5mm (tolerance: ±0.05mm)

• Inner diameter: 2.1mm (tolerance: -0/+0.1mm, actual range: 2.1–2.2mm)

• Polarity: Plug center = positive (+), outer sleeve = negative (-); camera terminal is reversed (center negative, outer positive).
  Exception: Panoramic (fisheye) cameras may use 3.5×1.35mm plugs—verify specifications.

• Connector Types:

• Standard DC Plug: For most fixed cameras; supports standalone or centralized power.

• Square PIN Terminal: Used in PTZ (dome) cameras; features anti-reverse locking to prevent polarity errors.

• PoE (Power over Ethernet): Transmits power (12V/24V/48V) via Ethernet cable; requires PoE-compatible devices.

2. Power Supply Methods & Applications

1. Standalone (Point-to-Point) Power

• How it works: Each camera uses a dedicated power adapter connected via a DC plug.

• Pros: Easy maintenance, long-distance power delivery (220V AC cascading), no voltage drop.

• Cons: Higher cost (multiple adapters), safety risks from aging cables or rodent damage.

• Best for: Scattered installations (e.g., retail stores, warehouses).

2. Centralized Power Supply

• How it works: A single power distribution box supplies multiple cameras via DC extension cables.

• Pros: Cost-effective, simplified wiring.

• Cons: Voltage drop over long distances (requires higher output voltage or thicker cables), complex troubleshooting.

• Best for: Dense installations (e.g., residential complexes, office buildings).

3. PoE Power Supply

• How it works: Power and data transmitted simultaneously via Ethernet (standard PoE uses pins 1236 or 4578).

• Pros: Clean wiring, high safety (low-voltage transmission).

• Cons: Requires PoE-enabled devices; limited distance (≤100m).

• Best for: IP cameras in standardized deployments (e.g., campuses, schools).

3. Selection Tips

1. Verify Device Specifications

• Check camera labels for voltage (e.g., 12V, 9V, 5V) and power requirements.

• Measure existing DC plug dimensions (outer × inner diameter) to ensure compatibility.

2. Choose Reliable Brands

• Opt for certified products (e.g., CE, FCC) from reputable brands (e.g., iLink Professionals, TARGET Store).

• Avoid low-quality plugs to prevent poor contact or short circuits.

3. Match Power Supply to Scenario

• Scattered cameras: Standalone power for flexibility.

• Dense cameras: Centralized power for cost savings.

• IP cameras: PoE for simplified setup.

4. Extension Cable Considerations

• Use DC extension cords matching the plug size (e.g., 5.5×2.1mm male-to-male or female-to-female adapters).

• Prioritize pure copper cables (≥0.75mm²) to minimize voltage drop.

4. Common Issues & Fixes

1. Camera Fails to Start or Restarts Frequently

• Cause: Insufficient adapter power, voltage drop, or aging cables.

• Solution: Upgrade to a higher-wattage adapter, increase centralized power output voltage, or replace cables.

2. Reverse Polarity Connection

• Risk: Damage to camera or adapter.

• Prevention: Use anti-reverse connectors (e.g., square PIN terminals) or label polarity on DC plugs.

3. Unstable PoE Power

• Cause: Poor-quality Ethernet cables or non-standard PoE devices.

• Solution: Use Cat5e/Cat6 cables and confirm devices support IEEE 802.3af/at.

Why choose Daykit DC power connectors ?

1. Premium Material: Envirmental PVC+ Pure copper Inner Wire.
2. Safety: Maximum 5A Current 3-36V, Heavy Duty Pure copper Inner Wire can handle Up to 5 A Current.
3. 5.5mm x 2.1mm Male + Female DC Power Connector,Reliable connect, good performance.Double Layer (Injection Moulding) Provide Best Polarity Connection and Insulation DC Electrical Connector connect wire lead end to a DC 2.1x5.5mm port.
4. No electrical tap, No splicing, no crimping, but only a small screw driver.Super Tight Screw on Terminal can Handle 16-26 AWG Gauge Wire.
5. DC Power Plug with plastic construction and strain relief.
6. Application: Easier for camera installation, save time and more securer cable connection.For 3- 36 Volt Power Supply, 2.1 x 5.5 mm Connectors, CCTV Cable Connection, Led Strip Extention, DIY Board , Security Tailgat Camera, Video Balun. Best choice for LED strip lights, CCTV Camera, Audio & Video connection.
7. Each item is tested before shipping and are 100% working.
8. Package included:10 PAIRS DC Power Jack Plug Barrel Adapter Connector for CCTV Camera,LED strip lights.