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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Keychron K2 V2 Wireless
75% layout, hot-swappable mechanical, Bluetooth + USB-C. Mac/Win toggle. The thinking developer's daily driver.
Logitech G413 SE TKL
Tenkeyless mechanical keyboard with tactile switches and aircraft-grade aluminium top plate. White LED backlight.
Razer BlackWidow V4 Pro
Full-size mechanical with command dial, dedicated media keys, doubleshot ABS keycaps and underglow RGB.
Out of stockLogitech G213 Prodigy
Membrane gaming keyboard, RGB zones, anti-ghosting. Entry-level.
Out of stockLogitech G512 Carbon Romer-G Tactile
Mechanical keyboard, RGB, aircraft-grade aluminium top.
Out of stockLogitech G PRO X TKL LIGHTSPEED
Wireless tenkeyless gaming keyboard, GX hot-swappable switches.
Out of stockRazer Huntsman Mini 60%
60% optical-mechanical, Razer Linear/Clicky optical switches.
Out of stockCorsair K70 RGB PRO
Mechanical, Cherry MX or OPX switches, AXON 8000Hz polling, PBT keycaps.
Out of stockCorsair K100 AIR WIRELESS
Ultra-thin wireless mechanical, Cherry MX Ultra Low Profile Tactile switches.
Out of stockHyperX Alloy Origins Core (TKL)
Tenkeyless mechanical, HyperX Red/Aqua/Blue switches, aircraft-grade aluminium.
Out of stockKeychron K2 V2 Wireless Mechanical (75%)
75% layout, Bluetooth + USB-C, Gateron switches, RGB. Mac/Windows toggle.
Out of stockKeychron Q1 Pro Wireless QMK/VIA
Premium 75% aluminium board, hot-swap, gasket-mount, QMK/VIA programmable.
Out of stockUSB 2.0 4-Port Hub (Bus-Powered)
Compact bus-powered 4-port USB 2.0 hub for keyboards + mice + peripherals.
Out of stockCompressed Air Duster 400 mL
Non-flammable cleaning spray for keyboards, fans, PCBs.
HC-05 6pin Bluetooth Module with Button
[Bluetooth Module] HC-05 Bluetooth Module Are you in search of an HC-05 Bluetooth Module, a versatile and cost-effective solution for your wireless communication needs? Look no further. This Bluetooth module offers seamless wireless communication for a wide range of applications, from GPS navigation systems to water and electricity meter readings. Whether you're an electronics enthusiast, a DIY hobbyist, or a professional looking for competitive pricing, this module is designed to meet your requirements. The HC-05 Bluetooth Module lets you switch between Master and Slave modes with ease using AT Commands, and it comes pre-configured in Slave Mode. Its compatibility with devices such as phones, laptops, and microcontrollers ensures hassle-free connectivity. With a USART interface, it's a perfect fit for microcontrollers supporting USART communication. Plus, you can configure its settings effortlessly using the command mode. Ideal for DIY projects and data exchange, this Bluetooth module provides LED feedback for seamless operation, giving you the best bang for your buck. Buy the HC-05 Bluetooth Module today and enjoy top-notch wireless communication at a competitive price. The HC-05 Bluetooth Module with Baseplate is a slave-only device. This means that it can connect to most phones and computers with Bluetooth but it cannot connect to another slave-only device such as keyboards and other HC-06 modules. To connect with other slave devices a master module would be necessary such as the HC-05 module ,which can do both master and slave. The slave mode in HC-05 Bluetooth cannot initiate a connection to another Bluetooth device but can accept connections. Master mode can initiate a connection to other devices. Key Features: Working current: matching for 30 mA, matching the communication for 8 mA. With the computer and Bluetooth adapter, PDA, seamless connection equipment. Use the CSR mainstream Bluetooth chip, Bluetooth V2.0 protocol standards. Potter default rate of 9600, the user can be set up. Bluetooth protocol: Bluetooth Specification v2.0+EDR Speed: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps. Security: Authentication and encryption. Profiles: Bluetooth serial port. HC-05 Bluetooth Module Pin Diagram: HC-05 Bluetooth Module Pin Description: Pin Number Pin Name Description 1 Enable / Key This pin is used to switch between command mode (set low) and Data Mode (set high). The default setting of this HC 05 Bluetooth module is Data Mode. 2 Vcc This pin can be used to power the Bluetooth module. It has an operating voltage of +5V DC. 3 Ground Connect the module's ground pin to the Microcontroller’s Ground Pin (GND). 4 TX – Transmitter Sends serial data to the MCU. This pin will distribute all Bluetooth data in the form of serial data to the Microcontroller. 5 RX – Receiver Obtain Serial Data. This pin will transmit all serial data that is provided to it over Bluetooth. 6 State The on-board LED attached to the state pin can be used as feedback to see if Bluetooth is functioning properly. 7 LED Indicates the status of Module Blink once in 2 sec: Command Mode Repeated Blink: Waiting for connection in Data Mode Blink twice in 1 sec: Connection successful in Data Mode 8 Button Used to control the Key/Enable pin to switch between Data Mode and command Mode HC-05 Default Values: Bluetooth Name: “HC-05” Password: 1234 or 0000 Communication: Slave Mode: Data Mode Data Mode Baud Rate: 9600, 8, N, 1 Applications Can be used for wireless communication between two microcontroller units. Communicate with Laptop mobile phones etc. Data Logging Wireless Robots DIY Home Automation Projects GPS-based DIY projects. Specifications: Serial communications 9600-115200bps Frequency 2.4~2.524 GHz Power Supply 5VDC Operating Current 30mA Range <100m Dimensions 30mm x 14mm x 2.2 mm Weight 5 grams Package Includes: 1 x HC-05 Bluetooth Module
12x12x12mm Tactile Push Button Switch
[Mechanical Switches] The 12×12×12 mm Tactile Push Button Switch is a commonly used momentary input switch widely utilized in electronic circuits and DIY projects. These switches are designed for PCB mounting with through-hole pins, making them easy to solder and integrate into electronic designs. The switch operates in a normally open configuration, meaning the circuit remains disconnected until the button is pressed. When the button is pressed, the contacts close momentarily and complete the circuit, making it ideal for input controls, reset buttons, menu buttons, and control interfaces. Featuring reliable dome contact technology, the switch provides strong tactile feedback, ensuring accurate operation during use. With a high operating force and a long mechanical life of up to 300,000 cycles, this tactile switch offers durability and dependable performance. Its compact and lightweight design makes it suitable for PCBs, breadboards, prototypes, and embedded systems. It is widely used in consumer electronics, telecommunications equipment, computer peripherals, testing instruments, medical devices, and audio/visual equipment. Due to its versatility and reliability, the 12×12mm tactile push button switch is an essential component for engineers, hobbyists, and electronics enthusiasts working on Arduino projects, robotics systems, and custom electronics designs. ⭐ Key Features Standard tactile push button switch Momentary normally-open operation Through-hole PCB mounting Strong tactile feedback High operating force (3.0N – 3.6N) Long mechanical life up to 300,000 cycles Compact and lightweight design Suitable for electronics and DIY projects 🔧 Technical Specifications Switch Type: Tactile Push Button Switch Size: 12 × 12 × 12 mm Mounting Type: Through Hole / PCB Mount Shaft Shape: Round Operation: Momentary (Normally Open) Operating Force: 3.0N – 3.6N Stroke: 1.05 mm Mechanical Life: 300,000 cycles Contact Type: Dome contact technology 🎯 Applications Arduino and microcontroller projects DIY electronics circuits Consumer electronics devices Computer keyboards and peripherals Robotics systems Industrial control boards Testing and instrumentation devices 📦 Package Includes 1 × 12 × 12 × 12 mm Tactile Push Button Switch