Solar charge controllers are essential for ensuring the smooth functioning of a solar panel and its battery. This model features full electronic protection and fully automatic operation with a PWM charge mode (SOC). The unit has large terminals, with considerable distance between each, as well as a digital LED display. Also features temperature compensation provided by the built-in external temperature sensor. This 20A model is suitable for 12V/24V DC. Finally, there are two built-in USB slots, allowing you to charge a wide variety of devices.
This science kit is an essential introduction to physics knowledge!
Is it a demonstration of a scientific law or a work of art?
A beautiful desk toy for your favorite person’s office!!
This 1mW, 532nm Super Safe Green Laser Pointer is for education, government or other settings where safety is a concern.
This beautiful candle holder is carved out of natural amethyst!
This is a great clean heat demonstration model for the classroom setting!