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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
45mm 1.75-Inch 4Ohms 3W Internal Magnet Speaker with Frame
[Speakers] 45mm Internal Magnet Speaker with Frame – 4Ω 3W 45×23×23mm The 45mm Internal Magnet Speaker with Frame (1.75-Inch) is a compact and efficient audio driver designed for DIY electronics, portable audio devices, multimedia systems, toys, alarms, intercoms, and embedded audio applications. Featuring an internal magnet structure and durable mounting frame, this speaker provides clear and stable sound output while maintaining a compact form factor. With a compact size of 45×23×23mm, 4Ω impedance, and 3W power rating, this speaker is suitable for small amplifier projects and electronic devices where space is limited. Its built-in frame allows convenient installation in custom enclosures, panels, and electronic products. ⭐ Key Features 45mm (1.75-Inch) speaker size 4Ω impedance 3W power rating Internal magnet design Durable mounting frame Compact 45×23×23mm construction Clear and stable sound output Lightweight and space-saving Suitable for low-power audio applications Easy to install in custom enclosures Ideal for DIY, repair and OEM applications 📋 Technical Specifications Product Type: Internal Magnet Speaker Speaker Size: 45mm (1.75 Inch) Dimensions: 45 × 23 × 23mm Impedance: 4Ω Power Rating: 3W Magnet Type: Internal Magnet Frame Type: With Mounting Frame Speaker Type: Dynamic Full Range Speaker Audio Type: Mini Full Range Speaker Mounting: Frame / Panel Mount Application: Compact Audio & Embedded Electronics 🔧 Applications DIY Speaker Projects Portable Audio Devices Bluetooth Speaker Projects Multimedia Speaker Systems Alarm Systems Toys and Sound Modules Intercom Systems Embedded Electronics Educational Electronics Kits Replacement Speaker Repairs Smart Gadgets OEM Product Manufacturing Mini Amplifier Projects 🛠️ Installation Mount the speaker securely inside the required enclosure or panel using its mounting frame. Connect it to a compatible amplifier with an output suitable for 4Ω speakers and a power rating appropriate for the 3W speaker. Proper mounting helps reduce unwanted vibration and improves overall sound performance. 📦 Package Includes 1 × 45mm Internal Magnet Speaker with Frame – 4Ω 3W ⚠️ Precautions Match the 4Ω impedance with the amplifier output. Do not exceed the 3W rated power. Do not apply direct DC voltage to the speaker. Ensure correct wiring polarity during installation. Avoid exposure to moisture and excessive dust. Mount securely to prevent vibration and unwanted noise. Do not apply physical pressure to the speaker cone or diaphragm. Use a compatible audio amplifier module for proper operation.
2 Inch 4 Ohms 5Watt Internal Magnet Speaker with Frame
[Speakers] 2-Inch Internal Magnet Speaker with Frame – 53×29×23mm 4Ω 5W The 2-Inch Internal Magnet Speaker with Frame is a compact and efficient audio driver designed for DIY electronics, portable audio devices, alarms, toys, embedded systems, and other space-constrained applications. Featuring an internal magnet design and durable frame construction, this speaker provides clear and balanced sound output while maintaining a compact footprint. With dimensions of 53×29×23mm, 4Ω impedance, and a 5W power rating, this speaker is suitable for small amplifier projects and electronic devices requiring a compact audio solution. The mounting frame makes installation convenient in custom enclosures and equipment. ⭐ Key Features 2-Inch compact speaker design Internal magnet structure 4Ω impedance 5W power rating Durable metal frame construction Clear and balanced sound output Compact and space-saving design Easy mounting with frame and screw slots Suitable for low and medium-power audio applications Ideal for DIY and OEM applications 📋 Technical Specifications Product Type: Dynamic Internal Magnet Speaker Speaker Size: 2 Inch Dimensions: 53 × 29 × 23mm Impedance: 4Ω Power Rating: 5W Magnet Type: Internal Magnet Magnet Material: Ferrite Shape: Rectangular Frame Type: Metal Frame Cone Material: Paper / Mylar Diaphragm depending on variant Speaker Type: Full Range / Dynamic Speaker Mounting: Frame with Screw Slots Application: Compact Audio & Embedded Electronics 🔧 Applications DIY Speaker Projects Portable Audio Devices Bluetooth Speaker Projects Alarm Systems Toys and Sound Modules Intercom Systems Embedded Electronics Educational Electronics Kits Replacement Speaker Repairs Smart Gadgets OEM Product Manufacturing Mini Amplifier Projects 🛠️ Installation Connect the speaker to a compatible amplifier output matching the speaker's 4Ω impedance and 5W power rating. Secure the speaker firmly using the mounting frame to reduce unwanted vibration and noise during operation. 📦 Package Includes 1 × 2-Inch Internal Magnet Speaker with Frame – 4Ω 5W ⚠️ Precautions Match the 4Ω impedance with the amplifier output. Do not exceed the 5W rated power. Avoid applying direct DC voltage to the speaker. Avoid exposure to moisture and excessive humidity. Mount the speaker securely before operation. Do not apply physical pressure to the speaker cone or diaphragm. Avoid short circuits at the speaker terminals. Keep the speaker away from excessive heat and magnetic interference.
Passive Radiator Bass Diaphragm Rubber Speaker Vibration Plate for DIY Speakers
[Passive Radiator] 🔊 Oval, Square & Round Passive Radiator Bass Diaphragm Rubber Speaker Vibration Plate for DIY Speakers Deep Bass Enhancement • Passive Design • No External Power Required • Ideal for DIY Speaker Projects The Rubber Passive Radiator Bass Diaphragm is a high-quality auxiliary bass vibration plate designed to significantly improve the low-frequency response of speaker systems. Available in Oval, Square, and Round shapes with multiple sizes, this passive radiator enhances bass performance without requiring additional power or amplifier channels. Unlike conventional speakers, a passive radiator does not contain a voice coil or magnet. Instead, it utilizes the air pressure generated by the active speaker driver to vibrate, producing deeper, richer bass while minimizing distortion and unwanted cabinet resonance. Manufactured using premium rubber and durable ABS materials, these passive radiators provide excellent flexibility, durability, and long service life. They are ideal for upgrading Bluetooth speakers, portable speakers, multimedia speakers, subwoofers, soundbars, and custom DIY audio projects. Whether you're repairing an existing speaker or building a custom enclosure, these passive bass diaphragms help deliver powerful low-frequency performance while maintaining compact enclosure sizes. ⭐ Features Premium quality rubber passive radiator Available in Oval, Square & Round shapes Produces deep and powerful bass response No power supply or wiring required Improves low-frequency performance Reduces speaker distortion Durable rubber suspension Lightweight and compact design Easy to install Ideal for DIY speaker upgrades and repairs 📋 Technical Specifications Product Type: Passive Radiator Bass Diaphragm Material: Rubber + ABS Plastic+Metal Shape: Oval / Square / Round (Depending on Selected Variant) Available Sizes: Multiple Sizes (2040 to 6090 Series) Operation: Passive (No Voice Coil or Magnet) Power Requirement: None Installation Type: Speaker Cabinet Mount Application: Low Frequency Bass Enhancement Color: Black 🔧 Applications Suitable for: Bluetooth Speakers Portable Speakers DIY Speaker Projects Multimedia Speakers Home Audio Systems Bookshelf Speakers Soundbars Subwoofers Wireless Speakers Audio System Repairs Custom Speaker Cabinets DIY Audio Enclosures 📦 Package Includes 1 × Passive Radiator Bass Diaphragm (Size & Shape as Selected) ⚠️ Note This is a passive radiator only and does not contain a voice coil, magnet, or electrical terminals. Product images are for reference only. The actual product may vary slightly in appearance depending on the selected size, shape, or manufacturing batch.
Out of stockDC 12V Mini 370 Diaphragm Pump Self-Priming Suction Pressure Water Pump
[DC Water Pump] DC 12V mini 370 Self-Priming Water pump Introducing DC 12V Mini 370 Self-Priming Water Pump at best price in India with . Designed for durability and this DC 12V Mini 370 Diaphragm Pump offers consistent performance with self-priming capability & ensure smooth operation even at varying pressure. Compact and lightweight, this 12V 370 mini water pump is perfect for application like aquariums, small fountain, and portable water system. With its robust suction capabilities, this DC 12V Self-Priming Suction Pressure Water Pump ensure effective water flow in diverse setting. Its low power consumption and quiet operation make it perfect for both indoor and outdoor use. Built with high quality material, this pump is resistant to wear & ensure reliable performance over time. Feature Self-Priming Mechanism: This DC 12V mini 370 Self-Priming Water pump pump feature a self priming design for efficient water transfer. It ensure stable performance even with changing water level. Compact and Lightweight: Its small size and low weight make it easy to use in small space. Perfect for portable application need minimal space usage. High Suction Power: This water pump deliver strong suction power for quick and effective water movement. It can handle low pressure condition without loosing output efficiency. Durable Build Quality: This DC 12V Mini 370 Diaphragm Pump made from high quality material, this pump offer long lasting durability and performance. It resists wear and tear & ensure reliable operation over time. Versatile Application: It is also perfect for aquarium, small garden, and DIY water circulation project. The pump works effectively for a variety of home and industrial uses. Specification Specification Details Operating Voltage 12V DC Current Consumption 0.5A – 1A (depending on load) Flow Rate 1.5-2.5 liters per minute Maximum Pressure Up to 2.5 bar (36 PSI) Suction Lift Up to 2 meters Discharge Head Up to 3 meters Motor Type 370 brushed motor Self-Priming Yes, capable of dry priming Body Material High-quality plastic with corrosion resistance Port Diameter Inlet and outlet: 4mm Noise Level Low noise operation (<65 dB) Lifespan Over 1000 hours of continuous operation Applications Water transfer, small irrigation systems, DIY project Dimensions 24x61x24mm Weight 60g Package Includes: 1 x DC 12V Mini 370 Diaphragm Pump Self-Priming Suction Pressure Water Pump
R385 Pump 6-12V DC Mini Aquarium Water Pump
[DC Water Pump] Overview of this 6-12V DC Min R385 Mini Aquarium Pump Introducing the R385 Mini Aquarium Water Pump, your ideal solution for efficient water circulation in small tanks. With its compact design and versatile 6-12V DC power compatibility, this pump fits seamlessly into any aquarium setup. Enjoy steady water flow and maintain optimal conditions for your aquatic pets with ease. Designed with reliability in mind, the R385 Mini Water Pump ensures quiet operation while providing sufficient water movement. Its diaphragm base design delivers high performance & ensure your aquarium inhabitants thrive in a healthy environment. Say goodbye to stagnant water and hello to a dynamic aquatic eco system with this dependable mini pump. Whether you’re a seasoned hobbyist or a beginner, the R385 Mini Aquarium Pump offers comfort and peace of mind. Its user friendly design allows for easy installation and operation. And make it the perfect choice for aquarium enthusiasts of all levels. Enhance the beauty of your under water world with the reliable performance of the R385 Mini Water Pump. Features 6-12V DC power compatibility: The R385 Mini Aquarium Water Pump easily adapts to power sources from 6-12 volts. And also provide flexibility in setup options for your aquarium system. Compact design: With its sleek and space saving design, the R385 pump is perfect for mini aquarium setups. And also optimize space with smooth water circulation. Reliable diaphragm based design: Featuring a durable diaphragm based design. This R385 water pump also ensure smooth and trusted water flow & provide a healthy aquatic environment for fish and plants alike. Quiet operation: Engineered for quiet operation, this mini water pump decrease noise. And create a serene atmosphere for your aquatic companions to thrive without disturbance. User-friendly design: Whether you’re a beginner or an experienced hobbyist. This R385 Mini Aquarium Pump is also built for easy installation and operation. And also save you time and allow you to focus to create the perfect under water landscape. Specification Specification Details Model R385 Rated Voltage DC 6V to 12V Working Current 0.5A to 0.7A (Max) Power 4W-7W Max Lift 3m Max Suction 2m Max Water Temperature 80°C Pump Size 90mm x 40mm x 35mm (approx) Fluid 0-100°C Input/Output Tube Diameter Outer: 8.5mm, Inner: 6mm (approx) Max Current (Startup) Up to 2 Amps Life Up to 2500 Hours Maximum Flow Rate 1 – 3L/min Package Includes: 1 x R385 Pump 6-12V DC Mini Aquarium Water Pump
Passive Diaphragm Radiator Speaker Accessories Showcase Speaker Repair Parts
[Passive Radiator] Product Description: Model: 88 48 Low Frequency Vibration Plate Type: Sound film, diaphragm Material: Rubber Size: 88*48mm Net weight: 35 grams The bass radiator is also called a passive speaker. It is used to replace the inverted tube. The subwoofer made with the radiator has the following advantages compared with the traditional inverted subwoofer. The low frequency diving depth is equal to the back type, but the speed is the same. In this sense, it is faster than the inverted type, using the advantage of a certain closed box, and at the same time completely eliminating the disadvantage of the inverted structure-that is, the wind noise brought by the inverted nozzle. Package Includes: 1 x Passive Diaphragm Radiator Speaker Accessories Showcase Speaker Repair Parts
Rubber Passive Radiator Bass Vibration Plates
[Passive Radiator] The Oval Shape Passive Radiator Bass Diaphragm Rubber Speaker Plate is designed to enhance the low-frequency bass response of speaker systems without requiring additional power. Made from high-quality flexible rubber, this passive radiator works by using the air pressure generated inside the speaker enclosure to produce deep and powerful bass vibrations. Passive radiators act as an alternative to traditional bass reflex ports. Instead of allowing air to escape through a port, the radiator diaphragm vibrates in response to internal air pressure from the active driver, resulting in stronger bass performance, reduced distortion, and improved overall sound quality. These DIY speaker passive radiators are ideal for portable speakers, Bluetooth speakers, subwoofers, home audio systems, and custom speaker enclosures. Their lightweight yet durable construction ensures long-lasting operation and easy installation in a wide variety of audio projects. Available in sizes 4080, these passive radiators allow builders and audio enthusiasts to choose the right size for their speaker design and enclosure. Perfect for DIY speaker upgrades, custom audio builds, and professional speaker system enhancements, this rubber bass vibration plate delivers powerful bass performance without increasing power consumption. ⭐ Key Features Durable Rubber Construction for long-lasting use Enhances Bass Performance and low-frequency response Passive Operation – No Power Required Improves Sound Clarity and reduces distortion Lightweight and Compact Design Available in Sizes 4080 Ideal for DIY speaker projects and audio upgrades Easy to integrate into speaker enclosures 🔧 Technical Specifications Product Type: Passive Radiator / Bass Diaphragm Plate Shape: Oval Material: High-quality Rubber Function: Passive Bass Radiator Operation: Air-pressure driven vibration Available Sizes: 4080variants Installation Type: Speaker enclosure mounting Application: Audio speakers & subwoofer systems 🎯 Applications DIY speaker projects Portable Bluetooth speakers Home theater systems Subwoofer speaker boxes Custom speaker cabinets Audio system upgrades 📦 Package Includes 1 × Oval Shape Passive Radiator Bass Diaphragm Plate
80W High Pressure Mini Diaphragm Water Pump 12v Self Priming 3.1 LPM 100 psi
[DC Water Pump] Overview of this 80W high pressure mini water pump 12v self priming 3.1 lpm Introducing 80W High Pressure mini water pump 12v Self Priming 3.1 LPM 100 psi at best price. It is specially designed for powerful performance. This 80W high pressure mini water pump deliver stable and reliable water flow. This mini diaphragm water pump is perfect for a variety of device. Its compact design ensure easy installation and operation in small spaces. This 12v self-priming small water pump offer convenience and efficiency for everyday use. With a flow rate of 3.1 LPM and 100 psi pressure, it fulfill demanding need of water flow. This 3.1 LPM 100 psi small water pump ensure high performance and durability. Its robust construction make it perfect for both residential and commercial purposes. Experience the benefits of the mini diaphragm water pump in various setting. This 80W high pressure mini water pump is perfect for garden irrigation and RV system. Its self priming feature allow for smooth operation. Features High Pressure Output: This 80W High Pressure mini water pump delivers a powerful 100 psi for efficient water delivery. Which make it perfect for applications who need strong water flow. Self-Priming Capability: Its self priming design allow for automatic operation after initial setup. It also ensure regular water flow without manual intervention. Compact and Efficient: 80W motor provides robust performance in a compact size. Perfect for limited spaces while maintaining high efficiency. Durable Construction: This 12v Self Priming small water pump is built with durable materials to withstand harsh conditions. Designed for long-lasting use in various environments. Versatile Use: It is also a perfect choice for multiple use including RVs, boats, and agricultural use. Can handle a variety of fluids beyond just water. Specification Specification Description Power 80W Voltage 12V DC Flow Rate 3.1 liters per minute (LPM) Pressure 100 psi Self-Priming Yes, self-priming Diaphragm Type Mini diaphragm Material Corrosion-resistant materials Motor Type Permanent magnet Noise Level Low (less than 70 dB) Temperature Range Suitable for temperatures from 0°C to 60°C Protection Thermal overload protection Inlet/Outlet Ports Threaded or barbed connections Applications Suitable for water transfer, spraying, and misting Dimensions Small Certifications CE, RoHS Package Includes: 1x 80W High Pressure Mini Diaphragm Water Pump 12v Self Priming 3.1 LPM 100 psi
1.5-Inch 40mm Speaker – 4Ω 2W with Neodymium Magnet
[Speakers] 1.5-Inch 40mm Speaker – 4Ω 2W with Neodymium Magnet The 1.5-Inch 40mm Speaker with Neodymium Magnet is a compact and lightweight audio driver designed for DIY electronics, portable speakers, multimedia devices, toys, alarms, embedded systems, and other space-constrained audio applications. Featuring a neodymium magnet, this speaker provides a compact magnetic structure while maintaining efficient audio performance. With a 40mm (1.5-inch) speaker size, 4Ω impedance, and 2W power rating, it is suitable for small audio amplifier projects and compact electronic devices. Its lightweight construction makes it particularly suitable for portable applications where space and weight are important considerations. ⭐ Key Features 40mm (1.5-Inch) speaker size 4Ω impedance 2W power rating Neodymium magnet Compact and lightweight design Clear and balanced sound output Suitable for low-power audio applications Easy to integrate into compact enclosures Ideal for DIY and embedded electronics Suitable for portable audio devices 📋 Technical Specifications Product Type: Mini Full Range Speaker Speaker Size: 40mm (1.5 Inch) Diameter: 40mm Impedance: 4Ω Power Rating: 2W Magnet Type: Neodymium Speaker Type: Dynamic / Full Range Mounting: Enclosure / Panel Mount Application: Compact Audio & Embedded Electronics 🔧 Applications DIY Speaker Projects Mini Bluetooth Speakers Portable Audio Devices Multimedia Devices Toys and Educational Kits Alarm and Notification Systems Intercom Systems Embedded Electronics Smart Gadgets Replacement Speaker Applications Mini Amplifier Projects OEM Electronic Products 🛠️ Installation Connect the speaker to a compatible audio amplifier designed for a 4Ω load. Ensure that the amplifier's output power is suitable for the speaker's 2W rating. Mount the speaker securely inside the enclosure to reduce unwanted vibration and improve sound performance. 📦 Package Includes 1 × 40mm (1.5-Inch) 4Ω 2W Speaker with Neodymium Magnet ⚠️ Precautions Match the 4Ω impedance with the amplifier output. Do not exceed the 2W rated power. Do not apply direct DC voltage to the speaker. Ensure correct polarity during installation. Avoid moisture and excessive dust. Do not apply pressure to the speaker cone or diaphragm. Mount securely to prevent vibration and unwanted noise. Use a compatible amplifier for best performance.
Out of stockAir Pump DIY Small 6V Silent Diaphragm Pump
[DC Air Pump] This 370 Diaphragm 6V Self-Priming Small Micro Vacuum Pump is a brand new and high-quality water pump. Small size but strong; low consumption and high efficiency. Multi-purpose. Can be used as a diaphragm pump, water pump, water suction pump, vacuum pump. You can also use this pump to make automatic hand sanitizer dispenser. Features: Mini electric vacuum pump with high air flow for good performance. Vacuum pump is made of premium aluminium and plastic, it is corrosion resistant and durable in use. Mini size design of pump, with inlet and outlet on its body. Electric air pump is easy to install, provide much convenience. Air pressure pump is widely used in air sampling, instruments and equipment and industry, home appliances and other fields. Application: Fish tank water changes Experimental models Inflatable small pool Tea machine Grain oil pumping station Car scrub Specification: Material: Aluminium, plastic Color: As picture shown Rated voltage: DC 6V Rated current: ＜400mA Air Flow without Load: 2~3.2LPM Max. vacuum: ＜420mmHg Noise: 65dB Weight: Approx. 64g Package Includes: 1 x Air Pump
Out of stockR280 Diaphragm 3.7V – 5V Self-Priming Small Micro-pump
[DC Water Pump] R280 Diaphragm 3.7V – 5V Self-Priming Small Micro-pump This R280 Diaphragm 3.7V Self-Priming Small Micro-pump is a brand new and high-quality water pump. Small size but strong; low consumption and high efficiency. Multi-purpose. Can be used as a diaphragm pump, water pump, water suction pump, vacuum pump. Applications: fish tank water changes, experimental models, inflatable small pool, tea machine, grain oil pumping station, car scrub, etc. Note: 1. Take precaution and connect the power supply incorrect polarity. There is a + sign for the positive supply. 2. This pump cannot be put in water (liquid) when using, not submersible. 3. Don’t no-load test for too long; Don’t dry run it, the pump will get damaged. 4. Not designed for continuous operations under load or no load. 5. In the inside is plastic leaves, can’t suction impurity; Can cause damage to rotor blades. Package Includes: 1 x R280 Diaphragm 3.7V Self-Priming Small Micro-pump