Power & Relay
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12V Industrial Power Supply Unit (1A to 40A) | Reliable DC Transformer
Regular price From HK$19.00Regular priceSale price From HK$19.00 -
12.6V 1.5A Li-ion Battery Charger (UK Plug) - 5.5mm x 2.1mm Tip
Regular price HK$45.00Regular priceSale price HK$45.00 -
AA NiMH Rechargeable Battery 1.2V 1200mAh - DIY & Safety Ready
Regular price HK$12.00Regular priceSale price HK$12.00 -
4S 20A 18650 Lithium Battery Protection Board | 14.8V 16.8V BMS Module
Regular price HK$25.00Regular priceSale price HK$25.00 -
1S 3.7V 10A 18650 Battery Protection Board (BMS) | Safe Lithium Power
Regular price HK$10.00Regular priceSale price HK$10.00 -
10-Pack 18650 Battery Holder Bracket Spacers for DIY Battery Packs
Regular price HK$10.00Regular priceSale price HK$10.00 -
3.7V 10000mAh LiPo Battery Rechargeable Polymer Cell (170x60x10mm)
Regular price HK$58.00Regular priceSale price HK$58.00 -
LX-LBC3 Type-C 2-in-1 Charging & Discharging Module (5V 1.2A)
Regular price HK$10.00Regular priceSale price HK$10.00 -
18650 UPS Battery Boost Charging Module - 5V 2A Lithium Charger
Regular price HK$45.00Regular priceSale price HK$45.00 -
LM2596 DC-DC Adjustable Step-Down Module with LED Voltmeter (3A)
Regular price HK$35.00Regular priceSale price HK$35.00 -
5A Boost Converter with LCD | DC 9V-45V to 11V-50V Step-Up Module
Regular price HK$79.00Regular priceSale price HK$79.00 -
3V-6V to 400kV High Voltage Generator Module - DC Boost Converter
Regular price HK$25.00Regular priceSale price HK$25.00 -
ESP8266 ESP-01S 5V WiFi Relay Module (Supports APP Remote Control)
Regular price HK$25.00Regular priceSale price HK$25.00 -
Voltage to PWM Converter Module | 0-10V to 0-100% PWM (50kHz)
Regular price HK$25.00Regular priceSale price HK$25.00 -
PWM to 0-10V Voltage Converter Module | Digital to Analog for PLC & MCU
Regular price HK$25.00Regular priceSale price HK$25.00 -
USB-C Power Cable w/ On/Off Switch - 1 Meter (5V 3A)
Regular price HK$25.00Regular priceSale price HK$25.00
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.