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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Soldering Kit (15-30W)
Variable wattage 15-30W/230V soldering iron. 280–450°C. De-soldering pump, flux paste, solder wick, 5 tips, soldering wire.
3D Pen Kit
Nozzle temp ~180–230°C (varies by filament). Filament: PLA/ABS 1.75mm. Power: 5V/2A or 12V adapter (model-dependent). Adjustable feed speed. Tips/nozzles included. Heat insulation + standby safety.
Out of stockSoldering Iron Tip Set (5 shapes)
Replacement tips for 936/900M iron — chisel, conical, bevel, knife, fork.
25 Watt Soldering Iron with 3mm Tip
[Soldering Iron] 25W Soldering Iron – Deluxe Economic The 25W Soldering Iron – Deluxe Economic is a compact and practical soldering tool designed for electronics assembly, component soldering, PCB repair, circuit modifications, and general-purpose electronic work. With a 25W heating element and included 3mm spade tip, it provides a convenient solution for routine soldering applications. The soldering iron features a quick-heating element to reduce waiting time before operation. It is compatible with most standard soldering tips available on the market, making it suitable for both hobbyists and professional electronics repair work. This soldering iron is manufactured in India and may be supplied under SAMCON, Devaji, Noel, Alpine, or an equivalent manufacturer, depending on availability. ⭐ Key Features 25W power output Includes 3mm spade tip Quick-heating capability Compatible with most standard soldering tips Compact and practical design Suitable for PCB soldering and repair Durable construction for general electronics work Suitable for hobbyists, technicians, and educational use Made in India 📋 Technical Specifications Product Type: Electric Soldering Iron Model: Deluxe Economic Power Rating: 25W Tip Type: 3mm Spade Tip: 3mm Spade Tip, Pre-Installed Heating Type: Quick Heating Tip Compatibility: Most Standard Soldering Tips Manufacturer: SAMCON / Devaji / Noel / Alpine or Equivalent Country of Origin: India Application: Electronics Soldering and PCB Repair 🔧 Applications General Electronics Component Soldering PCB Assembly PCB Repair Circuit Modifications Electronics Hobby Projects DIY Electronics Educational Electronics Workshops Component Replacement Wire Soldering General Electrical & Electronic Repair 🛠️ How to Use Insert a suitable soldering tip and allow the iron to heat up. Apply solder to the heated joint and component connection to create a proper electrical and mechanical connection. After completing the work, place the soldering iron safely on a heat-resistant stand and allow it to cool before storage. 📦 Package Includes 1 × 25W Soldering Iron 1 × 3mm Spade Tip (Pre-Installed) ⚠️ Precautions The soldering tip becomes extremely hot during operation. Do not touch the heated tip or metal parts during use. Always place the soldering iron on a suitable heat-resistant stand when not in use. Use in a well-ventilated area. Wear appropriate eye protection during soldering. Keep away from children and flammable materials. Disconnect from the power supply after use. Allow the iron to cool completely before changing the tip. Lead-free solder may require higher temperatures and may not perform optimally with every 25W soldering application. ❓ Frequently Asked Questions Q: Can the 3mm spade tip be replaced?A: Yes. The supplied specification states that the soldering iron is compatible with most standard soldering tips, allowing tip replacement. Q: What safety precautions are required?A: Use the soldering iron in a well-ventilated area, use eye protection, and place it on a heat-resistant stand when not in use. Q: Is it compatible with lead-free solder?A: It can be used with lead-free solder, although lead-free soldering may require higher temperatures depending on the application.
4S 20A 18650 Lithium Battery Protection Board
[Lithium Battery Protection Board] The HXYP-4S-BM20 4S 20A Lithium Battery Protection Board (BMS) is a compact and reliable battery management system designed specifically for 3.7V lithium-ion 18650 rechargeable cells. This board provides complete protection and safe operation for building 4-cell (4S) battery packs with a nominal output voltage of up to 14.8V and a full charge voltage of 16.8V. Featuring a square, lightweight, and portable design, this protection board is easy to integrate into custom battery packs and compact enclosures. It allows you to connect four 18650 lithium cells simultaneously and ensures balanced and safe charging and discharging. The board includes multiple built-in safety protections such as over-charge protection, over-discharge protection, over-current protection, and short-circuit protection, helping to extend battery life and prevent damage or hazardous conditions. This module is ideal for use in DIY battery packs, power tools, solar storage systems, electric scooters, backup power supplies, robotics, and other lithium battery applications. ⭐ Key Features ✔ Designed for 4S (4-cell) 18650 lithium-ion battery packs ✔ Supports continuous current up to 15A ✔ Built-in protection for over-charge, over-discharge, over-current & short circuit ✔ Compact square PCB design – easy to install ✔ Low power consumption with ultra-low quiescent current ✔ Increases battery safety, reliability, and lifespan 🔧 Technical Specifications Model: HXYP-4S-BM20 Battery Type: 3.7V Li-ion (18650 rechargeable cells) Configuration: 4S (4 cells in series) Charging Voltage: 16.8V Maximum Continuous Current: 15A Maximum Peak Current: 20A Over-Charge Voltage: 4.25 ± 0.05V per cell Over-Discharge Voltage: 2.5 ± 0.05V per cell Quiescent Current: < 30 µA Board Size: 3.6 × 3.6 cm Country of Origin: China 🎯 Applications DIY lithium battery packs Power tools & backup batteries Solar energy storage systems Electric scooters & e-bikes Robotics & embedded systems UPS & portable power stations 🔹 Battery Connection Terminals on Board Usually marked as: B- → Battery Pack Negative (Cell 1 –) B1 → Connection between Cell 1 & Cell 2 B2 → Connection between Cell 2 & Cell 3 B3 → Connection between Cell 3 & Cell 4 B+ → Battery Pack Positive (Cell 4 +) 🔹 Output / Charge Terminals P- → Load / Charger Negative P+ → Load / Charger Positive (same as B+) 🔧 Step-by-Step Wiring Connect 4 cells in series: Cell order:Cell1 → Cell2 → Cell3 → Cell4 Then wire as: Cell1 negative → B- Cell1 positive / Cell2 negative → B1 Cell2 positive / Cell3 negative → B2 Cell3 positive / Cell4 negative → B3 Cell4 positive → B+ For charging & discharging: Charger / Load positive → P+ (or B+) Charger / Load negative → P- ⚠️ Safety Tips Always connect balance wires before main power wires Use proper insulated wires and nickel strips Do not short any terminals Use a 16.8V Li-ion charger for 4S packs Ensure BMS current rating matches your load 📦 Package Includes 1 × -4S-BM20 4S 20A Lithium Battery Protection Board (BMS) * Product Images are shown for illustrative purposes only and may differ from actual product.
Out of stockSoldering Iron Tips Cleaning Sponge-Yellow
[Soldering Tools] Soldering Iron Tips Cleaning Sponge is an ideal replacement for the old sponges. It removes all the Solder residue and keeps your Soldering tip clean. It lasts long even after extensive multiple time usage. Low cost and high-quality solder sponge. Features:- Complete Solder Residue Removal High-quality solder sponge at a reasonable price. Perfect swap for the old sponges. Solder sponge cleans soldering iron tips of oxides and extra solder. Provides extended tip life and precise soldering Package Includes:- 1 X Soldering Iron Tips Cleaning Sponge
Out of stockTEC1 12706 40x40mm Thermoelectric Cooler 6A Peltier Module
[Thermoelectric Peltier Module] Looking to cool down your DIY project or any electronic device then you are at the right product. The TEC1 12706 40×40 mm Thermoelectric Cooler 6A Peltier Module is the simple application of the Peltier Thermoelectric Effect. The module features 127 semiconductor couples in the area of 40 x 40mm which very effectively cools and heats up to 90°C. The thermoelectric cooler is also known as TEC or Peltier Module creates a temperature differential on each side. One side gets hot and the other side gets cool. They use to either warm something up or cool something down; above all, you can use either side. You can also take advantage of a temperature differential to generate electricity. A thermoelectric cooler (TEC) module is a semiconductor-based electronic component that functions as a small heat pump. By applying the DC power source to a TEC, heat will be transferred from one side of the module to the other. It creates a cold and hot side. They are widely useful in industrial areas, for example, computer CPUs, CCDs, portable refrigerators, medical instruments, and so on. Operating Tips: Max. Operating Temperature: 138 Degree C Do not exceed Imax or Vmax when operating a module. Please carry out moisture protection options (sealing) in final application use. Life expectancy: 200,000 hours Failure rate based on longtime testings: 0.2%. Connection Diagram of TEC1 12706 with Arduino: Features : Small module. Operable up to 138°C. Easy transition between the hot side to the cool side and vice-versa just by reversing the polarity of the supply. Quality tested cooling cells. Solid-state, vibration-free, noise-free. Simple to install and operate. Should use with a heat sink. Package Includes: 1 x TEC1 12706 Thermoelectric Cooler cooler 12 Volt 92 Watt.
Out of stockTEC1 12710 40x40mm Thermoelectric Cooler 10A Peltier Module
[Thermoelectric Peltier Module] TEC1-12710 Thermoelectric Cooler 10A Peltier Module 40*40mm Looking to cool down your DIY project or any electronic device then you are at the right product. The TEC1 12710 40×40 mm Thermoelectric Cooler 10A Peltier Module is the simple application of the Peltier Thermoelectric Effect. The module features 127 semiconductor couples in the area of 40 x 40mm which very effectively cools and heats up to 90°C. The thermoelectric cooler is also known as TEC or Peltier Module creates a temperature differential on each side. One side gets hot and the other side gets cool. They use to either warm something up or cool something down; above all, you can use either side. You can also take advantage of a temperature differential to generate electricity. A thermoelectric cooler (TEC) module is a semiconductor-based electronic component that functions as a small heat pump. By applying the DC power source to a TEC, heat will be transferred from one side of the module to the other. It creates a cold and hot side. They are widely useful in industrial areas, for example, computer CPUs, CCDs, portable refrigerators, medical instruments, and so on. OPERATING TIPS: Max. Operating Temperature: 138 Degree C Do not exceed Imax or Vmax when operating a module. Please carry out moisture protection options (sealing) in final application use. Life expectancy: 200,000 hours Failure rate based on longtime testings: 0.2%.
Out of stockTEC1 12709 40x40mm Thermoelectric Cooler 9A Peltier Module
[Thermoelectric Peltier Module] TEC1-12709 40mm x 40mm DC12V High Power Semiconductor Refrigerating Sheet Thermoelectric Cooler Looking to cool down your DIY project or any electronic device then you are at the right product. The TEC1 12709 40×40 mm Thermoelectric Cooler 9A Peltier Module is the simple application of the Peltier Thermoelectric Effect. The module features 127 semiconductor couples in the area of 40 x 40mm which very effectively cools and heats up to 90°C. The thermoelectric cooler is also known as TEC or Peltier Module creates a temperature differential on each side. One side gets hot and the other side gets cool. They use to either warm something up or cool something down; above all, you can use either side. You can also take advantage of a temperature differential to generate electricity. A thermoelectric cooler (TEC) module is a semiconductor-based electronic component that functions as a small heat pump. By applying the DC power source to a TEC, heat will be transferred from one side of the module to the other. It creates a cold and hot side. They are widely useful in industrial areas, for example, computer CPUs, CCDs, portable refrigerators, medical instruments, and so on. OPERATING TIPS: Max. Operating Temperature: 138 Degree C Do not exceed Imax or Vmax when operating a module. Please carry out moisture protection options (sealing) in final application use. Life expectancy: 200,000 hours Failure rate based on longtime testings: 0.2%.