Correctly and safely replace the wall switch Step 1: the control switch off the circuit. Step 2: Remove the switch cover. If the cover is not easy to remove, it may be a multi-layer paint fixed. Use a razor knife or multipurpose remove paint near the edges of the cover to remove the cover. Step 3: Check the old standby switch switch to determine the type required. (Before buy new switches, replace the cover.) You must use the same type of switch wall switch, but in most cases, you can install more advanced than previous switches. Step 4: Prepare the new switch to be installed. Certain types of wall switch is not used for fixing screws wire connection. But there are only slightly larger than the bare copper wire holes. Removal of about 1.3 cm from the cable end of the insulating layer vintage wall switch, then stripped wire end into the small hole. Locking tabs to achieve electrical connection, and it can not pull the wire clamp. Black wall switch, if necessary, by a narrow blade screwdriver into the slot next to release tight line hole wire from the old switch. Step 5: Remove the mounting screws on the switch cover and remove the cover. Step 6: Replace wall switch junction box. Step 7: The two new switches using the supplied mounting screws, the switch again placed in place. Even the screw holes on the junction box is inclined installation oblong hole on the bracket can be achieved up and down vertically fixed switch. Step 8: Use the previously removed screw connection cover and reposition the fuse or circuit breaker is turned on. Above content provided by Hebei Tianyi Electric Co., Ltd., we hope to help a friend in the same industry. Data amazing! Wall switch pass rate of 73% for household and similar purposes wall switch, mainly for home, office, restaurants, hotels, farms, light industry factories and other places. According to the State Administration of Quality Supervision communications crystal wall switch, national supervision of product quality wall switch recently showed that almost a fifth of the product failure. The total sample of Guangdong, Zhejiang, Jiangsu, Hunan, Beijing, Shanghai and other six provinces, municipalities and 31 companies of 31 kinds of products, qualified 26 kinds, product sample pass rate of 83.9%. Sampling results show that, after years of development of our wall switch products, has entered a relatively stable development stage, medium-sized enterprises better product quality in small business product quality. The sample of 16 kinds of medium and large enterprise products, qualified 15 species, sample pass rate of 93.8%; a sample of 15 kinds of small business products, qualified 11 species, sample pass rate of 73.3%. So choose a good quality brand of high-quality wall switch is very important, good intentions Electric specializes in producing wall switch, only so that consumers be assured of a good switch! Above content provided by Hebei Tianyi Electric Co., Ltd., we hope to help a friend in the same industry. Supermarket wall switch, Vicki Electric (certified), wall switch by Hebei Tianyi Electric Co. Hebei Tianyi Electric Co., Ltd. (www.tianyidq.com) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and to welcome new and old customers throughout the visit, sincere cooperation for a better future. Tianyi Electronics - your reliable friend, Company Address: Hebei Xingtai City Julu Road 35 km Dong Ning Wei Zhuang Industrial Zone, Contact: Manager Li.