Electronic Coin supply 12 container sales

Use 
 1. According to "manage" button, then click open 12 goalkeeper, merchants can view products, add and remove products. After viewing product sold, and then "manage" key to exit, do not press the "start selling" key, does not affect the counting and "sold out instructions." 
 2. Merchants of goods each put 12 feet, according to "start selling" button to start selling. 
 3. Sold, the businesses sold door to see the light see the situation of goods sold. 
 4. When a user coin, the system automatically opens a door with items, allowing users to remove the goods sold at the same time the door light off. 
 When the goods sold, the 12-door light body, sold out instructions, etc. Always, slot closed.