A D Net Computronics India Private Limited

If you found the 5x5 inch box a bit too bulky, the 4x4 inch (100mm x 100mm) PVC Junction Box is often considered the "sweet spot" for standard CCTV installations. It is compact enough to look discrete on a wall but deep enough to house a standard video balun and power jack.

Product Overview

This junction box serves as a protective enclosure for the vulnerable connection points where your camera meets the building's wiring. It is specifically engineered to withstand outdoor elements while keeping your video signal stable.

Technical Specifications Core Benefits for CCTV

• Corrosion Shield: BNC connectors and DC power plugs are notorious for oxidizing when exposed to humidity. This box creates a dry micro-environment to prevent "flickering" video.

• Ease of Maintenance: If a camera fails, you don't have to pull cables through the wall. You simply open the box, disconnect the leads, and swap the unit.

• Security: It conceals the wiring so an intruder cannot easily unplug or cut the camera's power source.

• Clean Finish: It allows you to tuck away the 6–12 inches of "pigtail" cable that comes attached to most IP or Analog cameras.

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An external USB sound card (often called a USB Audio Adapter) is a compact "plug-and-play" device that bypasses your computer’s internal sound hardware. It's the perfect fix if your laptop's jack is broken or if you’re looking to separate your audio channels.

Here is a breakdown of how these devices are typically configured and what those sockets actually do.

 

1. Typical Physical Layout

Most standard adapters feature a USB-A or USB-C connector on one end and two distinct 3.5mm analog sockets on the other.

• The Headphone Socket (Green/Icon): This is a Stereo Output. It sends audio signals from your computer to your headphones, speakers, or an amplifier.

   

• The Microphone Socket (Pink/Icon): This is a Mono Input. It is designed for "3-pole" (TRS) microphones. It provides a small amount of "plug-in power" required by most budget electret condenser mics.

2. Technical Specifications

While they look simple, there is a lot happening inside that tiny plastic housing:

•  DAC (Digital-to-Analog Converter): Converts the  1s and  0s from your computer into the electrical waves your headphones turn into sound.

   

• ADC (Analog-to-Digital Converter): Converts your voice (analog waves) into digital data the computer can record.

• Sampling Rate: Most basic cards support 44.1 kHz or 48 kHz at 16-bit depth, which is standard "CD quality."

3. The "Socket Trap": TRS vs. TRRS

One common point of frustration is the difference between headphone plugs.

4. Why use one?

• Noise Isolation: Internal sound cards are often surrounded by "noisy" electrical components (fans, CPUs) that cause hissing. Moving the audio processing outside the case can lead to a cleaner signal.

• Instant Repair: If your motherboard's audio chip fries, this  10– 20 device saves you from a costly repair.

• Extra Channel: You can use it to have your game music play through speakers while your Discord chat stays strictly in your headset.

The ADNet AD-AC-393 is a professional-grade, all-in-one modular crimping tool designed for high-performance networking environments. It is specifically engineered to handle the thicker shielding and larger wire gauges found in Cat7 and Cat6A cables, while remaining backward compatible with standard Cat6 and Cat5e.

Key Features & Specifications

• All-in-One Functionality: A single tool that integrates cutting, stripping, and crimping capabilitie

   

• Broad Compatibility: Supports RJ45 (8P8C) and RJ11/RJ12 (6P6C/6P4C) modular connectors.

• Cable Support: Optimized for Cat7, Cat6, Cat6A, and Cat5e cables. It is particularly effective for shielded (STP) connectors often used in Cat7 setups.

• Build Quality:

  • Steel Construction: Hardened carbon steel frame for durability and long-term precision.

  •  Ergonomic Grips: Textured blue/black non-slip handles to reduce hand fatigue during repetitive tasks.

     

  • Blade Guard: Built-in safety guards on the cutting and stripping blades to prevent accidental injury.

     

Comparison Table: AD-AC-393 vs. Standard Crimpers Usage Tips

1. Stripping: Use the built-in stripper to remove the outer jacket without nicking the internal twisted pairs.

2. Alignment: If using pass-through connectors, ensure the wires extend fully through the front of the plug before squeezing the handle.

3. Maintenance: Periodically wipe the blades with a light machine oil to prevent rust and maintain "razor sharpness."

PoE Splitter Adapter 48V to 12V is designed to convert Power over Ethernet (PoE) into a stable 12V DC output for non-PoE devices such as CCTV cameras, IP cameras, routers, and wireless access points. It allows both power and data transmission through a single Ethernet cable, simplifying installation and reducing wiring cost.

This adapter is widely used in surveillance systems where a PoE switch or injector supplies 48V power, which is then converted into 12V DC output along with LAN connectivity for reliable device operation.

🔹 Key Features

• Converts 48V PoE input to 12V DC output
• Provides RJ45 LAN output + DC power output
• Supports 10/100 Mbps data transmission
• Plug & Play – No configuration required
• Compatible with IEEE 802.3af PoE standard
• Stable power supply with low heat generation
• Built-in protection: overload, short circuit & surge protection
• Compact, lightweight & easy to install

The ADNet ADP-KF-1401 is a high-performance industrial-grade extender designed to transmit 4K HDMI signals, along with USB KVM (Keyboard, Video, Mouse) data, over long distances using a single fiber optic cable.

Here is a detailed breakdown of its specifications and core features:

 Core Specifications

• Resolution Support: Up to 4K @ 60Hz (3840 x 2160).

• Distance: Up to 20 km (12.4 miles) via Single Mode fiber.

• Fiber Type: Single Core (Simplex) Single Mode fiber with SC connectors.

• KVM Support: Remote control of a PC/NVR via USB 2.0 (supports keyboard, mouse, and some touchscreens).

• Audio: Supports integrated HDMI audio 

# Key Features

• Zero Latency: Utilizing uncompressed or minimally compressed fiber transmission, it ensures real-time video feedback, which is critical for KVM operations.

• Plug-and-Play: No software or driver installation is required; the units auto-negotiate resolution and connection parameters.

• EDID Management: Automatically identifies display parameters to ensure the source outputs the correct resolution for the remote monitor.

• Industrial Design: Usually housed in a durable metal casing with heat dissipation vents, suitable for 24/7 operation in server rooms or surveillance centers.

# Application Scenarios ## Technical Requirements

To get the most out of this unit, ensure your setup meets these criteria:

1. Fiber Cable: Must be Single Mode (9/125µm). Multimode fiber will significantly limit the distance.

2. Cables: Use HDMI 2.0 certified cables for 4K @ 60Hz stability.

3. Power: Both the Transmitter (TX) and Receiver (RX) require an external power supply  5V / 1A

The ADNet 120mm (4-inch) AC Cooling Fan is a heavy-duty  designed primarily for thermal management in server racks, networking cabinets, and electronic enclosures. Because it runs on standard 220V AC power, it is a "plug-and-play" solution for environments where a DC power supply isn't available.

Core Specifications

• Dimensions: 120mm x 120mm x 38mm (Standard 4-inch square).

• Input Voltage: 220V - 240V AC (50/60Hz).

• Construction: High-quality die-cast aluminum outer frame with theroplastic blades.

• Bearing Type: Usually equipped with  ball bearings for long-term continuous operation.

• Airflow: High-velocity output designed to push hot air out of cramped rack spaces.

Key Features1. Robust Metal Housing

Unlike plastic consumer fans, the ADNet model uses a metal body. This provides better heat dissipation for the fan itself and ensures it doesn't warp or melt under the high-temperature conditions found in server rooms.

 2. High Reliability

Designed for 24/7 operation, these fans are rated for tens of thousands of hours. The metal construction also provides EMI (Electromagnetic Interference) shielding, which is vital when placed near sensitive networking gear.

3. Easy Integration

• Mounting: Standard four-hole mounting pattern compatible with most 1U to 42U server racks.

• Wiring: Typically comes with lead wires or terminals that can be easily spliced into a power strip or a dedicated rack PDU (Power Distribution Unit).

ADNet Slim Sound Bar (AD-SP-139) is a versatile, budget-friendly audio solution designed specifically to bridge the gap between weak built-in TV/monitor speakers and expensive home theater systems. While compact, it packs multiple input methods, making it a "Swiss Army knife" for home entertainment.

The AD-SP-139 is built for users who want a plug-and-play experience. Its "Slim" designation refers to its low-profile height, allowing it to sit directly under most flat-screen TVs or computer monitors without blocking the remote sensor or the bottom of the screen.

# Multi-Connectivity Suite

One of this model's strongest selling points is its ability to play audio from almost any source:

• Bluetooth: Connects wirelessly to smart TVs, smartphones, or tablets.

• USB Port: Play your MP3 collection directly from a thumb drive.

• Micro SD/TF Card Slot: Allows the soundbar to act as a standalone music player.

• AUX (3.5mm) Input: The primary way to connect to non-smart TVs, PCs, or even gaming consoles.

## Technical Specifications ## Performance for Home TV Use

• Dialogue Clarity: The 10W output is specifically tuned to enhance mid-range frequencies. This makes it much easier to hear voices in movies and news broadcasts compared to standard internal TV speakers.

• Space Saving: Ideal for small bedrooms, dorms, or kitchen TVs where a full-sized soundbar with a subwoofer would be too bulky.

• Energy Efficient: Since it is USB-powered, you can often plug it directly into your TV's USB port for power, meaning it turns on and off automatically with your television.

Note for TV Users: This soundbar does not feature HDMI (ARC) or Optical inputs. You will likely use the AUX (Headphone Jack) or Bluetooth to connect it to your TV. Ensure your TV has one of these outputs before purchasing.

 

The SATA Power Cable (15 Pin to 4 Pin Molex Adapter) is designed to provide a reliable power connection between your power supply unit and SATA devices such as HDDs, SSDs, and optical drives. This adapter allows seamless conversion from a standard 4-pin Molex connector to a 15-pin SATA power connector, making it ideal for upgrading or expanding your system.

Built with high-quality materials, this cable ensures stable voltage output and efficient performance. It is perfect for use in desktop computers, servers, and custom PC builds where additional SATA power connections are required.

 Key Features:

• �� Converter Function: Converts 4-pin Molex power to 15-pin SATA power
• �� Wide Compatibility: Supports HDD, SSD, DVD drives, and other SATA devices
• ⚡ Stable Power Supply: Provides 5V and 12V output for reliable performance
• �� Plug & Play: Easy installation with secure connectors
• ��️ Durable Build: High-quality wires for long-lasting use
• �� Compact Length: Typically 10 cm for easy cable management

�� Applications:

• Desktop PC assembly and upgrades
• Adding extra SATA drives
• Powering HDD/SSD when PSU lacks SATA connectors
• Server and workstation setups

⚙️ Specifications:

• Connector A: 15-Pin SATA (Male/Female as per variant)
• Connector B: 4-Pin Molex (Male/Female)
• Voltage Support: 5V & 12V
• Cable Length: Approx. 10 cm
• Material: Copper wire with PVC insulation