Redness clip positive electrode, black clip negative electrode, with switches, power by 12V battery, 12V power adapters, etc. 20inch ceiling fan great for hot summer and windless day, also for outdoor camping tents. Lightweight, soft wind with little noise, Safe to use. Quality camping fan with 3 leaves, easy installation and dismantle. Perfect for campers, traveler, and picnics, meat market. It is also great for small room and offices.