Power & Relay
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1/2" DC Water Flow Generator | 5V/12V Micro Hydro Turbine
Regular price HK$89.00Regular priceSale price HK$89.00 -
5V 1A AC/DC Power Adapter (UK Plug) | 5.5x2.1mm 5W Wall Charger
Regular price HK$30.00Regular priceSale price HK$30.00 -
5V 3A AC/DC Power Adapter (UK Plug) | 5.5x2.1mm 15W Wall Charger
Regular price HK$45.00Regular priceSale price HK$45.00 -
TXB0104 4-Bit Bidirectional Voltage Level Translator Module | WCMCU-401
Regular price HK$24.00Regular priceSale price HK$24.00 -
Adjustable 3-24V 5A Power Supply Adapter | 5.5x2.1mm DC Plug
Regular price HK$115.00Regular priceSale price HK$115.00 -
Universal Adjustable DC Power Adapter 3V-36V 3A with Digital Voltage Display
Regular price HK$115.00Regular priceSale price HK$115.00 -
DC-DC Buck Boost Converter 0.5-30V 4A | Adjustable Power Supply Module
Regular price HK$60.00Regular priceSale price HK$60.00 -
Joyroom S-A25 3A Micro USB Fast Charging Cable (1.2m / 4ft)
Regular price HK$19.00Regular priceSale price HK$19.00 -
Type-C PD/QC Decoy Board: 5A USB Fast Charge Voltage Trigger Module
Regular price HK$15.00Regular priceSale price HK$15.00 -
FNIRSI DPS-150 Mini Programmable DC Power Supply (30V 5A 150W)
Regular price HK$398.00Regular priceSale price HK$398.00 -
12V 4A Power Adapter UK Plug | 5.5x2.1mm DC Power Supply
Regular price HK$95.00Regular priceSale price HK$95.00 -
9V 1.5A Power Adapter | UK Plug | 5.5mm x 2.1mm DC Supply
Regular price HK$35.00Regular priceSale price HK$35.00 -
3.6V 500mAh NiMH Rechargeable Battery Pack
Regular price HK$30.00Regular priceSale price HK$30.00 -
12.6V 5A Smart Li-ion Battery Charger for 3-Series 18650 Packs
Regular price HK$129.00Regular priceSale price HK$129.00 -
1.2V 600mAh Ni-MH AAA Rechargeable Batteries | Long-Lasting Power
Regular price HK$35.00Regular priceSale price HK$35.00 -
AA NiMH Rechargeable Battery 1.2V 1200mAh - DIY & Safety Ready
Regular price HK$12.00Regular priceSale price HK$12.00
Collection: Power & Relay
Reliable Power Supply & Relay Modules for Electronic Projects
Explore our comprehensive range of power management and control components designed for STEM education, DIY electronics, and professional engineering applications. From stable voltage regulation to safe battery storage, we provide the essential hardware to keep your circuits running efficiently and securely.
Key Components for Your Circuit
- DC-DC Converters & Voltage Regulators: Efficient step-down (buck) and step-up (boost) modules for precise voltage control in complex setups.
- Relay Modules: Securely control high-voltage appliances using low-power microcontroller signals, perfectly compatible with Arduino and ESP32.
- Battery Solutions: A wide selection of 18650 LiPo batteries, safe BMS protection boards, and durable battery holders for portable power needs.
- Power Adapters: Stable AC to DC power supplies ensuring continuous and reliable device operation.
How to Choose the Right Power Component?
- Voltage Requirements: Ensure your step-down/step-up modules match the exact input and output voltage of your specific motherboard and peripherals.
- Current Rating (Amperage): Select power adapters and relays that can easily handle the maximum current load of your project to prevent overheating.
- Safety Features: When working with portable power, always opt for battery chargers and BMS modules with built-in overcharge and short-circuit protection.