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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Corsair RM750e 750W (80+ Gold)
Quiet, fully modular Gold PSU. ATX 3.0 with native 12VHPWR — ready for RTX 4070 SUPER / 7800 XT.
Corsair RM750e (750W, 80+ Gold, Modular)
750W fully modular, 80+ Gold, ATX 3.0 with native 12V-2x6 (12VHPWR) for RTX 40 cards. 7-year warranty.
Corsair RM850e ATX 3.1 Gold Fully Modular Power Supply (850W)
[Power Supply] Corsair RM850e Fully Modular Low-Noise ATX 3.1 Power Supply Corsair RMe Series fully modular power supplies deliver quiet, reliable 80 PLUS Gold and Cybenetics Gold rated power to your PC. ATX 3.1 and PCIe 5.1 compliant with native 12V-2x6 cable for modern RTX 40/50 series GPUs. ⭐ Key Features - ATX 3.1 & PCIe 5.1 Certified with native 12V-2x6 GPU connector - 80 PLUS Gold & Cybenetics Gold certified energy efficiency - 105°C-rated industrial-grade capacitors for steady power and long-term reliability - Zero RPM Fan Mode for near-silent operation at low to medium loads - 120mm rifle bearing fan with specially calculated fan curve - 7-Year Corsair Manufacturer Warranty 📋 Technical Specifications - Continuous Power: 850 Watts - Efficiency: 80 PLUS Gold - Fan Size: 120mm Rifle Bearing - Dimensions: 140 x 150 x 86 mm (Compact 140mm length) - Connectors: 1x ATX 24-pin, 2x EPS 8-pin, 1x PCIe 12V-2x6 (16-pin), 3x PCIe 8-pin, 7x SATA 📦 Package Includes - 1 x Corsair RM850e 850W Modular Power Supply - 1 x Complete Modular Black Cable Set & AC Power Cord
Corsair CX650F RGB 650W (80+ Bronze)
650W fully-modular Bronze with RGB fan. Comfortable headroom for RTX 4060 Ti / RX 7600 builds.
MSI MAG A850GL PCIe 5.0 (850W, Gold)
850W fully modular, 80+ Gold, ATX 3.0, native 16-pin 12V-2x6. Headroom for i9 + RTX 4080 builds.
Seasonic Focus PX-1000 (1000W, 80+ Platinum)
1000W fully modular, 80+ Platinum, hybrid silent fan. Bulletproof choice for 4090 + 14900K builds. 10-year warranty.
Only 2 leftCorsair HX1200i (1200W, 80+ Platinum, Digital)
1200W fully modular, 80+ Platinum, software-monitored rails. Halo PSU for dual-GPU / extreme overclocking. 10-year warranty.
Out of stockCorsair CX750F RGB 750W 80+ Bronze
Fully modular 750W, 80+ Bronze, RGB fan. Mid-range pick.
Out of stockCorsair RM650e 650W 80+ Gold
Fully modular 650W Gold, ATX 3.0, 100% Japanese capacitors, 7-yr warranty.
Out of stockCorsair RM750e 750W 80+ Gold (ATX 3.0)
Fully modular 750W Gold, ATX 3.0 with 12V-2x6 connector for new GPUs.
Out of stockCorsair RM850e 850W 80+ Gold (ATX 3.0)
Fully modular 850W Gold, ATX 3.0, ideal for RTX 4080 / 5080 builds.
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 HX1200 1200W 80+ Platinum
Fully modular 1200W Platinum, premium capacitors, 10-yr warranty.
Out of stockSeasonic FOCUS GX-650 650W 80+ Gold
Fully modular 650W Gold, 10-yr warranty, hybrid fan mode.
Out of stockSeasonic PRIME TX-1000 80+ Titanium
Fully modular 1000W Titanium, 12-yr warranty, fanless mode. Flagship.
Out of stockCooler Master MWE Gold 750 V2
Fully modular 750W Gold, ATX 3.0, low-noise HDB fan.
Out of stockThermaltake Toughpower GF3 1000W Gold
Fully modular 1000W Gold, ATX 3.0, PCIe 5.0 12VHPWR.
Out of stockEVGA SuperNOVA 850 G6 850W Gold
Fully modular 850W Gold. 10-yr warranty. Compact 140 mm length.
Thermaltake Toughpower GF1 850W 80 Plus Gold Fully Modular SMPS
[Power Supply] Thermaltake Toughpower GF1 850W 80 PLUS Gold Fully Modular Power Supply Features 100% high quality Japanese 105°C capacitors, 140mm hydraulic bearing fan with Smart Zero Fan technology, and ultra-strict voltage regulation (< ±2%). ⭐ Key Features - 80 PLUS Gold certified up to 90% efficiency - 100% Japanese 105°C capacitors - Ultra Quiet 140mm Hydraulic Bearing Fan with Smart Zero Fan switch - Ripple noise < 30mV across all rails - 10-Year Thermaltake Warranty 📋 Technical Specifications - Model: PS-TPD-0850FNFAGD-H - Max Output Capacity: 850W - Modular: Fully Modular flat black cables 📦 Package Includes - 1 x Thermaltake Toughpower GF1 850W Power Supply - 1 x Cable Bag with full modular cabling
2S 4A Type-C Lithium Battery Charging Module – 8.4V Step-Up Boost Charger for 18650 Lipo
[Step UP Buck Converter] 2S 4A Type-C Lithium Battery Charging Module – 8.4V Step-Up Boost Charger for 18650 The 2S 4A Type-C Lithium Battery Charging Module is a compact step-up charging board designed for charging 2-cell series (2S) 18650 Li-ion/Li-Po battery packs. It accepts a 3–6V DC input through USB Type-C and boosts the voltage to 8.4V, the required full-charge voltage for a 2S lithium battery pack. The 4A specification refers to the maximum input current version. According to available product specifications, the corresponding charging current is approximately 2.2A, rather than 4A. ⭐ Key Features Designed for 2S lithium-ion/Li-Po battery packs Suitable for 2 × 18650 cells connected in series USB Type-C input 3–6V DC input Recommended input: 3.7V / 5V Step-up/boost charging circuit 8.4V charging voltage 4A maximum input-current version Approximately 2.2A charging current Automatic recharge function Battery charging protection features Compact PCB design LED charging/status indication Suitable for DIY battery and portable-power projects 📋 Technical Specifications Product Type: 2S Lithium Battery Step-Up Charging Module Battery Configuration: 2S – 2 cells in series Compatible Battery: 3.6V/3.7V Li-ion / Li-Po Nominal Battery Pack Voltage: 7.4V Full-Charge Voltage: 8.4V Input Voltage: DC 3–6V Recommended Input: DC 3.7V / 5V Maximum Input Current: 4A Charging Current: Approximately 2.2A Charging Interface: USB Type-C Charging Mode: Constant-current / constant-voltage Board Size: Approximately 39 × 18 × 6.3mm Operating Temperature: -40°C to +85°C LED Indicators: Charging / fully charged or constant-voltage status 🔋 Charging Performance For the 2S 4A version: USB Type-C 5V → Boost Charging Module → 8.4V → 2S Battery Pack The module draws up to approximately 4A from the input, while the specified charging current is approximately 2.2A. This distinction is important when selecting the USB power adapter. 🔧 Applications 2S 18650 battery packs 7.4V Li-ion battery packs 2S Li-Po battery packs DIY power banks Portable electronics Bluetooth speaker battery systems Robotics projects Solar charging applications Electronic prototyping Portable audio equipment Electric fan projects Type-C rechargeable equipment Custom battery charging systems 🛠️ How It Works The module uses a boost/step-up charging circuit to convert the lower USB Type-C input voltage into the 8.4V charging voltage required for a 2S lithium battery pack. Example: 5V Type-C Input → Step-Up Circuit → 8.4V Charging Output → 2S 18650 Battery A 2S battery pack consists of two lithium cells connected in series: 3.7V + 3.7V = 7.4V nominal4.2V + 4.2V = 8.4V fully charged 💡 LED Indicators The module uses status indicators to show the charging condition: CR: Charging OK: Fully charged / constant-voltage stage ⚠️ Important Notes This module is intended for 2S battery packs only. Do not connect a single 18650 cell directly to the 8.4V charging output. The two cells should be properly matched and in good condition. Do not exceed the 6V maximum input voltage. A suitable Type-C power source is required to supply the necessary input current. The 4A rating is the input-current rating, not the battery charging current. The specified charging current for this 2S 4A version is approximately 2.2A. This charging module should not automatically be considered a replacement for a dedicated 2S BMS/protection board. Use appropriate battery protection where required. Check the PCB polarity and connection markings before connecting the battery. Do not short-circuit the input or output. Use properly matched lithium cells for safe and reliable charging. Keep the module adequately ventilated during higher-current operation. 📦 Package Includes 1 × 2S 4A Type-C Step-Up Boost Lithium Battery Charging Module – 8.4V
Black Plastic 3×18650 Battery Holder or Case Series Connection With Wire
[Lithium Battery Holder] Black Plastic 3×18650 Battery Holder – Series Connection The Black Plastic 3×18650 Battery Holder is designed to securely hold three 18650 lithium-ion battery cells in series configuration. It provides a convenient and organized way to mount 18650 cells for DIY battery packs, portable electronics, power supplies, LED projects, and other battery-powered applications. The holder is made from durable plastic and features mounting holes for secure installation using suitable screws. It is supplied with red and black connecting wires for convenient connection to an external circuit. ⭐ Key Features Designed for 3 × 18650 battery cells Series connection Black plastic construction Without cover Secure battery positioning Easy installation Built-in mounting holes Red and black connecting wires Suitable for DIY battery pack projects Compact and lightweight design 📋 Technical Specifications Product Type: 18650 Battery Holder Battery Capacity: 3 Cells Battery Type: 18650 Li-Ion Cell Configuration: 3S / Series Connection Nominal Output Voltage: Approximately 11.1V with 3.7V cells Fully Charged Voltage: Approximately 12.6V Material: Plastic Color: Black Cover: Without Cover Connection Wires: Red and Black Mounting: Screw Mount Mounting Holes: Yes Recommended Screw Size: Approximately 3mm Application: Battery Pack / Portable Electronics 🔌 Connection The three 18650 cells are connected in series, increasing the total voltage while maintaining the capacity of a single cell. With standard 3.7V nominal cells, the pack is approximately 11.1V nominal and 12.6V when fully charged. The red wire is the positive connection and the black wire is the negative connection. 🔧 Applications DIY 18650 Battery Packs 3S Lithium-Ion Battery Packs Portable Electronics LED Lighting Projects DIY UPS Projects Arduino Projects ESP8266 / ESP32 Projects Rechargeable Electronics Battery-Powered Devices Electronics Prototyping 📦 Package Includes 1 × 3×18650 Battery Holder / Case – Series Connection, Without Cover ⚠️ Precautions Use only compatible 18650 Li-Ion cells. Use three cells with matching capacity, chemistry, age, and charge condition. Use a suitable 3S BMS/protection and charging circuit. Do not mix damaged or mismatched cells. Check polarity carefully before installation. Do not short-circuit the battery terminals. Do not use damaged, swollen, or leaking cells. Ensure the holder and wiring are securely installed.
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.
ESP32-C3 Super Mini Development Board With Headers Pins
[ESP Modules] Ultra Compact • Wi-Fi & BLE 5.0 • USB Type-C • Perfect for IoT & Embedded Projects The ESP32-C3 Super Mini Development Board is a compact, feature-rich development board built around the powerful ESP32-C3 SoC from Espressif. Powered by a 32-bit RISC-V single-core processor running at up to 160MHz, it combines 2.4GHz Wi-Fi, Bluetooth 5.0 Low Energy (BLE), and low-power operation in an ultra-small form factor. Designed for IoT, smart home, wireless communication, automation, and embedded system development, the ESP32-C3 Super Mini offers 4MB Flash memory, 400KB SRAM, multiple GPIOs, ADC, PWM, UART, SPI, and I2C interfaces for connecting sensors, displays, relays, and other peripherals. The onboard USB Type-C interface simplifies programming and power supply, while the built-in USB-to-Serial functionality enables quick firmware uploading without requiring additional programmers. Fully compatible with Arduino IDE, ESP-IDF, PlatformIO, and MicroPython, it is suitable for beginners, students, makers, and professional developers. Its ultra-compact breadboard-friendly design makes it ideal for portable and space-constrained projects where performance, wireless connectivity, and energy efficiency are essential. Note: Programming, software configuration, driver installation, firmware flashing, and coding-related issues are not covered under return or replacement. Users are expected to troubleshoot software-related issues independently. ⭐ Features Powerful ESP32-C3 32-bit RISC-V processor CPU frequency up to 160MHz Built-in 2.4GHz Wi-Fi (802.11 b/g/n) Integrated Bluetooth 5.0 Low Energy (BLE) Ultra-compact Super Mini design Breadboard-friendly layout USB Type-C interface for programming and power 4MB onboard Flash memory 400KB SRAM Multiple GPIO, ADC, PWM, UART, SPI & I2C interfaces Low power consumption with Deep Sleep mode Onboard programmable LED Compatible with Arduino IDE, ESP-IDF, PlatformIO & MicroPython Ideal for IoT, automation, robotics, and wireless applications 📋 Technical Specifications Product Type: Development Board Board Model: ESP32-C3 Super Mini Microcontroller: ESP32-C3 Processor Architecture: 32-bit RISC-V CPU Frequency: Up to 160MHz Core: Single Core Flash Memory: 4MB SRAM: 400KB Wi-Fi Standard: IEEE 802.11 b/g/n (2.4GHz) Bluetooth: Bluetooth 5.0 Low Energy (BLE) Operating Voltage: 3.3V Input Voltage: 5V via USB Type-C or 3.3V External USB Interface: USB Type-C GPIO: Multiple Digital GPIO Pins Analog Input: Up to 6 ADC Channels PWM: Supported UART: Supported SPI: Supported I2C: Supported USB-to-Serial: Onboard Onboard LED: User Programmable (GPIO8) Power Consumption: Ultra Low (Deep Sleep ≈ 43µA) Dimensions: Approx. 22.5 × 18 mm Headers: Pre-Soldered 🔧 Applications Suitable for: Internet of Things (IoT) Smart Home Automation Wireless Sensor Networks Home Automation Systems Bluetooth Low Energy Devices Wi-Fi Enabled Controllers Robotics Projects Data Logging Systems Remote Monitoring Industrial Automation Portable Embedded Devices Educational Learning DIY Electronics Projects Wearable Electronics Rapid Prototyping 📦 Package Includes 1 × ESP32-C3 Super Mini Development Board Pin Headers ⚠️ Note Programming, firmware installation, software configuration, and driver-related issues are not covered under warranty, return, or replacement. Please verify board compatibility and install the appropriate development environment before programming. Soldered and non-soldered header pin depend on stock
DHT11 Digital Temperature and Humidity Sensor Module 3.3V-5V for Arduino & Raspberry Pi
[Temperature Sensor] The DHT11 Digital Temperature and Humidity Sensor Module is a reliable and cost-effective sensor designed to measure ambient temperature and relative humidity. It combines a capacitive humidity sensing element and a thermistor with a built-in digital signal processing unit, providing calibrated digital output directly to microcontrollers. In addition, the DHT11 offers stable performance and excellent long-term reliability, making it suitable for environmental monitoring and automation applications. As a result, it is widely used in weather stations, smart home systems, greenhouse monitoring, HVAC systems, and educational electronics projects. Because the module includes the required pull-up resistor, interfacing with microcontrollers becomes simple and straightforward. Furthermore, only three connections are required: VCC, GND, and Data Output. The sensor operates from a wide voltage range of 3.3V to 5.5V DC, ensuring compatibility with Arduino, Raspberry Pi, ESP32, STM32, NodeMCU, and other development boards. Moreover, readily available libraries and example codes allow quick integration into projects. The DHT11 utilizes advanced digital signal acquisition technology and dedicated temperature-humidity sensing techniques to ensure accurate and dependable measurements. 🔹 Key Features Measures temperature and humidity simultaneously Calibrated digital signal output Low power consumption High reliability and long-term stability Capacitive humidity sensing technology Built-in pull-up resistor on module Compatible with Arduino, ESP32, Raspberry Pi, and STM32 Simple 3-wire interface Easy integration into IoT projects Compact and lightweight design 🔹 Technical Specifications Sensor Model: DHT11 Operating Voltage: 3.3V – 5.5V DC Output Type: Digital Serial Output Humidity Measurement Range: 20%RH – 90%RH Humidity Accuracy: ±5%RH Humidity Resolution: 1%RH Temperature Measurement Range: 0°C – 50°C Temperature Accuracy: ±2°C Temperature Resolution: 1°C Sampling Rate: 1Hz (One Reading Per Second) Long-Term Stability: < ±1%RH/Year Interchangeability: Fully Interchangeable Sensor Technology: Capacitive Humidity Sensor + Thermistor 🔹 Pin Configuration Pin 1 (VCC): 3.3V – 5.5V DC Power Supply Pin 2 (DATA): Digital Serial Data Output Pin 3 (GND): Ground 🔹 Applications This sensor module is suitable for: Arduino projects Raspberry Pi projects ESP32 projects IoT systems Weather monitoring stations Smart home automation Greenhouse monitoring HVAC control systems Environmental monitoring Educational electronics projects 🔹 Package Includes 1 × DHT11 Digital Temperature and Humidity Sensor Module