All products · 39 of 1440
Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Only 1 left3D Printer
Type: FDM/FFF. Nozzle: 0.4mm. Filament: PLA/ABS/PETG 1.75mm. Build volume ~220×220×250mm (typical classroom size). Layer height 0.1–0.3mm. Bed: heated optional. File: .STL/.GCODE. Connectivity: SD/USB.
Only 2 leftRobotic Arm Kit
DOF: 3–6 (kit dependent). Actuators: servo motors (SG90/MG90/MG996R class). Control: Arduino/servo driver (PCA9685 common). Supply: 5–6V for servos (separate recommended). Payload: light (50–200g typical for small kits).
Only 1 leftDrone Kit
Frame: 180–250mm class. Motors: brushless 2204/2205/2300KV. ESC: 20A–30A. Flight controller: F4/F7 (or basic for edu kits). Battery: LiPo 3S/4S. Props: 5-inch typical. Radio: 2.4GHz. Prop guards recommended.
Intel Core i5-12400F
Six P-cores, 12 threads. 2.5 / 4.4 GHz. The classic value gaming CPU — pair with B660 + DDR4 for an affordable rig.
AOC 27G2 27" 144Hz IPS
1080p, 144 Hz, 1 ms IPS. The classic budget gaming monitor — accurate colours out of the box.
Filament for 3D Printer (Multicolor pack)
Diameter: 1.75mm. Material: PLA (classroom preferred). Spool: 250g/500g/1kg. Tolerance: ±0.03–0.05mm. Print temp: 190–220°C.
Only 1 leftNVIDIA GeForce RTX 4090 (24 GB)
Halo product — uncompromised 4K and a workstation-class 24 GB VRAM buffer for AI / 3D. 450W TGP, four-slot coolers common.
Only 1 leftAMD Radeon RX 7900 XTX (24 GB)
Top-end Radeon. 24 GB GDDR6, 355W TBP. Excellent 4K raster, competitive price vs the 4080-class NVIDIA cards.
Only 1 leftASUS ROG Crosshair X670E Hero
Flagship AM5. PCIe 5.0 GPU + storage, 18+2 VRM, WiFi 7, twin USB4 / TB-class ports. For 7950X3D enthusiast builds.
Only 2 leftCorsair Dominator Platinum 64 GB (2×32) DDR5 6400
Workstation-class DDR5. 64 GB for 4K video editing, AI inference, big VMs. Premium RGB / fin-stack cooling.
Samsung 990 Pro 2 TB NVMe (Gen 4)
Flagship Gen 4 NVMe. 7450/6900 MB/s. Best-in-class for fast game loads + scratch disks. Optional heatsink version recommended.
Corsair CV450 450W (80+ Bronze)
Entry PSU for budget builds (i3 + GTX class). 80+ Bronze, 3-year warranty. No 12VHPWR — pair with mainstream GPUs only.
Cooler Master Hyper 212 EVO V2
Classic budget tower air cooler. Handles 12100 / 5600 / 7600 stock comfortably.
Logitech G502 HERO
11-button wired mouse with HERO 25K sensor. Adjustable weight, classic shape. Heavyweight comfort for long sessions.
Samsung Odyssey G5 27" QHD 165Hz
Curved 1440p VA. 165 Hz, HDR10. Great value for QHD gaming on RTX 4060 Ti / RX 7700 XT-class GPUs.
Only 2 leftApple MacBook Pro 14" M3 (16 GB / 512 GB)
14" Liquid Retina XDR (mini-LED, 120 Hz). M3 SoC, 16 GB unified memory, 512 GB SSD. Workstation-class for content creators.
Only 2 leftASUS ROG Strix X670E-E Gaming WiFi (ATX, DDR5)
AM5 ATX flagship, DDR5-8000 OC, PCIe 5.0 ×16 + 5.0 NVMe, Wi-Fi 6E, 2.5 GbE. Built for 7950X3D + 4090-class GPUs.
Out of stockCorsair RM1000x 1000W 80+ Gold
Fully modular 1000W Gold, fluid-dynamic fan, ATX 3.1 ready. RTX 4090 + HEDT-class.
Out of stockCorsair 2000D AIRFLOW ITX
Mini-ITX, vertical chamber, RTX-class GPU support. Footprint of a bookshelf speaker.
Out of stockSanDisk Ultra microSDHC 32 GB (Class 10)
32 GB microSDHC, A1, 120 MB/s read. Smartphones, tablets, Raspberry Pi.
48mm Square Internal Magnet Speaker – 4Ohms 5W
[Speakers] 48mm Square Internal Magnet Speaker – 4Ω 5W The 48mm Square Internal Magnet Speaker is a compact full-range audio driver designed for clear and efficient sound reproduction in space-constrained applications. With a 4Ω impedance and 5W power rating, this speaker is suitable for Bluetooth speakers, portable audio systems, DIY speaker projects and embedded electronic devices. Its square frame allows convenient mounting inside compact enclosures and panels. ⭐ Key Features Compact square speaker design 4Ω impedance 5W power rating Internal magnet construction Full-range audio output Compact size for space-limited applications Easy to install inside speaker enclosures Suitable for DIY and commercial audio projects Lightweight and practical design 📋 Technical Specifications Speaker Type: Internal Magnet Speaker Shape: Square Speaker Size: 48mm class Model: 4Ω 5W Impedance: 4Ω Power Rating: 5W Magnet Type: Internal Magnet Audio Type: Full-range Mounting Type: Panel / Enclosure Mount Dimensions: 47 × 29 × 23mm Application: Compact audio systems, DIY electronics and portable speakers 🔧 Applications Bluetooth speaker systems Portable speakers DIY speaker projects Compact audio enclosures Embedded audio systems Intercom systems Alert and notification devices Educational electronics projects Consumer electronic devices Custom audio projects 🛠️ Installation Connect the speaker to a compatible amplifier with a 4Ω output. Ensure the amplifier's output power is suitable for the speaker's 5W rating. Mount the speaker securely inside the enclosure to reduce unwanted vibration. Observe correct speaker polarity when connecting multiple speakers. 📦 Package Includes 1 × 48mm Square Internal Magnet Speaker Impedance: 4Ω Power: 5W ⚠️ Precautions Do not exceed the 5W rated power for prolonged operation. Use a compatible 4Ω amplifier. Avoid short-circuiting the speaker terminals. Keep away from moisture, excessive heat and physical damage. Ensure proper mounting to minimize vibration and unwanted noise. Actual sound quality depends on the amplifier, enclosure and application.
Out of stockGold AP-55 TPA3116D2 2×50W Bluetooth Stereo Digital Amplifier Board with USB, TF Card, FM & Remote
[Amplifier Board] Gold AP-55 TPA3116D2 2×50W Bluetooth Stereo Digital Amplifier Board with USB, TF Card, FM & Remote The Gold AP-55 is a compact Class-D stereo digital audio amplifier board based on the TPA3116D2 amplifier IC, designed for DIY Bluetooth speakers, home audio systems, portable speakers, bookshelf speakers, multimedia systems, and custom audio projects. Available product listings consistently identify the AP-55 as a dual-channel 50W + 50W amplifier, with a DC input range around 8–24V or 12–24V depending on the listing/version. The AP-55 combines the power amplifier with a multimedia player supporting Bluetooth 5.0, USB, TF/SD card, FM radio and AUX input. The Bluetooth device name is reported as GD-82EM, while the FM tuner covers 87.5–108.0MHz. It also includes an infrared remote control and a digital display for convenient operation. The TPA3116D2 Class-D amplifier provides efficient stereo amplification, making the board suitable for building compact but powerful audio systems. One detailed listing specifies support for 4Ω–8Ω speakers, with the commonly advertised maximum output of 50W per channel. ⭐ Key Features Gold AP-55 amplifier module TPA3116D2 Class-D amplifier IC 50W + 50W dual-channel stereo output Supports 4Ω–8Ω speakers Bluetooth 5.0 wireless audio Bluetooth device name: GD-82EM Built-in USB music player Built-in TF / SD card player Built-in FM radio FM frequency range 87.5–108.0MHz 3.5mm AUX input Infrared remote control Digital display Supports MP3 / WMA / WAV Power-off memory function Remembers the previous song and volume Compact design for DIY speaker projects High-efficiency Class-D amplification 📋 Technical Specifications Product Type: Stereo Class-D Digital Amplifier Board Model: Gold AP-55 Amplifier IC: TPA3116D2 Amplifier Class: Class-D Number of Channels: 2 / Stereo Output Power: 50W + 50W Maximum Total Output: 100W Speaker Impedance: 4Ω–8Ω Input Voltage: DC 8–24V (some listings specify 12–24V; verify the exact board version before use) Bluetooth Version: 5.0 Bluetooth Name: GD-82EM Bluetooth Range: Up to approximately 10–15m under suitable conditions Audio Formats: MP3 / WMA / WAV USB Support: Yes TF/SD Card Support: Yes FM Radio: Yes FM Frequency: 87.5–108.0MHz AUX Input: 3.5mm / Wired Audio Input Remote Control: IR Remote Remote Range: Approximately 4–7m Display: Digital Display Power-Off Memory: Yes Memory Function: Last song and volume Audio Input Modes: Bluetooth / USB / TF Card / FM / AUX Output: Dual-Channel Stereo Efficiency: Greater than 90% according to one detailed listing SNR: Approximately 102dB according to one detailed listing Distortion: Below 0.1% at normal listening levels according to one detailed listing Board Size: Approximately 70 × 50 × 20mm with shell, according to one listing 🎵 Audio & Playback Functions The AP-55 can switch between Bluetooth, USB, TF/SD Card, FM Radio and AUX sources. When Bluetooth mode is selected, users can pair a phone or other compatible device with GD-82EM. USB and TF/SD cards can be used for local music playback, while AUX provides a wired audio input. 📻 FM Radio The built-in FM tuner supports the 87.5–108.0MHz broadcast band. FM stations can be searched and selected using the onboard controls or remote control. 🎛️ Controls & Remote The module provides controls for functions such as previous track, next track, volume up, volume down, play/pause, mode selection and FM station selection. The infrared remote provides additional wireless control of playback, volume, mode and other supported functions. 🔧 Applications DIY Bluetooth Speakers High-Power Bluetooth Speaker Projects Portable Speaker Systems Bookshelf Speaker Systems Home Audio Projects Multimedia Speaker Systems USB MP3 Speaker Systems TF/SD Card Music Players FM Radio Speaker Projects Car Audio Projects Custom Wooden Speaker Cabinets Desktop Audio Systems Electronics DIY Projects 🛠️ Installation Connect a suitable DC power supply within the specified voltage range and observe the correct polarity. Connect the left and right speaker outputs to compatible 4Ω–8Ω speakers. Select Bluetooth, USB, TF/SD, FM or AUX according to the desired audio source. For maximum advertised output, a suitable 24V high-current power supply is recommended by one vendor; at lower supply voltages, available output power will be lower. 📦 Package Includes 1 × Gold AP-55 TPA3116D2 2×50W Bluetooth Amplifier Board 1 × IR Remote Control 1 × Required Connecting Wires/Cables (package contents may vary by seller/version) ⚠️ Precautions Verify the exact input voltage requirement of your AP-55 version before powering it. Do not exceed 24V DC where the board specification limits input to 24V. Check power polarity carefully before connection. Use speakers with a compatible 4Ω–8Ω impedance. Do not short-circuit the speaker output terminals. Ensure adequate ventilation during high-power operation. Use a suitable high-current power supply for high-output operation. Do not connect the speaker outputs together or directly to ground. Keep the board away from moisture and conductive materials. Incorrect wiring or excessive voltage can permanently damage the amplifier IC.
45mm (1.75-Inch) Internal Magnet Speaker 2 Ohms 10W Full Range Audio Speaker
[Speakers] 45mm (1.75-Inch) Internal Magnet Speaker – 2Ω 10W Full Range Audio Speaker The 45mm (1.75-Inch) Internal Magnet Speaker is a compact and powerful audio driver designed for DIY electronics, portable speakers, multimedia devices, toys, embedded audio systems, and custom speaker enclosures. Featuring a 2Ω impedance and 10W power rating, this speaker provides strong audio output when paired with a compatible amplifier. Its internal magnet design provides a compact profile while maintaining efficient magnetic performance. The built-in mounting frame makes installation easy in custom enclosures and electronic devices. With its 2Ω low-impedance configuration, this speaker is suitable for compatible Class-D amplifier modules where higher output power is required from a compact speaker driver. ⭐ Key Features 45mm (1.75-Inch) compact speaker 2Ω impedance 10W power rating Internal magnet design Full-range audio reproduction Compact and lightweight construction Built-in mounting frame Clear and powerful sound output Easy to install in custom enclosures Suitable for portable and embedded audio applications Ideal for DIY speaker projects 📋 Technical Specifications Product Type: Internal Magnet Speaker Speaker Size: 45mm (1.75 Inch) Impedance: 2Ω Power Rating: 10W Speaker Type: Full Range Magnet Type: Internal Magnet Frame Type: Mounting Frame Mounting: Frame / Panel Mount Application: Embedded & Portable Audio 🔧 Applications DIY Bluetooth Speaker Projects Portable Speaker Systems Mini Audio Amplifiers Multimedia Devices Toys and Educational Kits Intercom Systems Alarm and Notification Systems Embedded Audio Devices Custom Speaker Enclosures Robotics Projects Electronic Projects ⚠️ Precautions Use an amplifier that supports a 2Ω load. Do not exceed the 10W rated power. Check amplifier output impedance before connecting. Observe correct speaker polarity during installation. Avoid excessive mechanical pressure on the speaker cone. Keep away from moisture and excessive dust. Mount securely to minimize unwanted vibration and distortion. 📦 Package Includes 1 × 45mm (1.75-Inch) 2Ω 10W Internal Magnet Full Range Speaker