The drawbacks of LJT-LSB-I cable switch: Traditional switches have drawbacks in daily operation. 1. There is no centralized control on each switch, which cannot achieve control of all lights with one switch. Especially when guests come to visit and want to enter a room that has not yet turned on the lights, it is often difficult to find the switch. 2. Ordinary switches cannot achieve three control or multiple control operation functions. 3. There are no indicator lights on each switch, and the status of all lights cannot be displayed. 4. There is no power outage protection function, which poses a safety hazard. 5. Without remote control function, the larger the room, the more inconvenient it becomes. Turning on (off) the lights when waking up on a cold night is a very annoying thing. 6. There is no simple way to achieve full on/off operation. 7. The installation quantity of ordinary switches is relatively large, which brings a very uncomfortable feeling to the whole, and also adds a lot of trouble to installation, design, and wiring. 8. It is impossible to change the control object of a switch. 9. Adding lights and switches to a renovated house can damage the decoration. The switch mechanism is not in line with energy conservation and environmental protection. 1. There is no indication of the status of the lights on the switch, which can sometimes cause the lights to remain on and waste energy. 2. Due to the inconvenience of turning off the lights, they are not turned off in a timely manner and consume electricity. 3. Unable to automatically delay turning off the lights, it consumes electricity and is troublesome. 4. The use of metal contacts can sometimes cause electric arcs and sparks. After collecting the problems that need to be improved for ordinary dual control switches, we focused on analyzing why most households still cannot accept the existing smart switches in the market. After investigation, it was found that some smart products that can be seen in the market can only solve some of the problems they have raised. For most families, what they bring is not practical convenience, but complexity (elderly and children who are accustomed to using ordinary switches do not even utilize their functions), and the problems are still everywhere: 1. The concept of a total control box at the head of a hotel bed is complex in connection and can only be controlled in one room, which is not suitable for large houses. 2. A single remote control light cannot achieve networked control, and a single remote control cannot control all lights. 3. A separate dimming (delay) switch only dims (delays), without a memory function, and cannot automatically delay (dimming) or perform other advanced operations. 4. Intelligent lighting systems under CE BUS, IBUS or other protocols require professional wiring and specialized training to be used and installed. The advantage is strong signal line stability. 5. Wireless switches use radio frequency to transmit signals, and they are often affected by radio frequency interference, causing their frequency to become unstable and lose control. They also require encoding and decoding settings, making the operation very cumbersome. There are many additional devices with high prices, such as a variety of switch types, and the need for receiving modules, modems, centralized controllers, etc. 6. The power carrier switch uses power line transmission to send signals, and the switch needs to be equipped with encoding and decoding, which can be affected by power line noise interference, making its operation very unstable and often causing the switch to lose control. There are many additional devices with high prices, such as a variety of switch types and the need for wave arresters, filters, etc. 7. There are also smart switches in the market that are 6-bit, 8-bit, etc. The 6-bit and 8-bit smart switches are only suitable for 6-way and 8-way lights in a house, which cannot meet the needs of users to control all lights. The future development of LJT-LSB-I cable switch. The new type of cable switch occupies the vast majority of the rural market. However, ordinary cable switches have a disadvantage: it is difficult to determine their on/off status during power outages, which often leads to unnecessary energy waste. I have slightly improved the shape of the ratchet of the pull switch, so that it is easy to determine the on/off of the pull switch without changing the structure of other parts of the switch and increasing costs. 1. The operation should be simple. 2. Functionality should be practical. 3. The appearance should be beautiful. 4. The position of the buttons should be clear and easy to operate. 5. Good stability, (using specialized signal lines for stability). 6. Installation should be convenient. 7. Maintenance should be easy. 8. The price should be affordable* Control operation function of; New intelligent display function; Unique safety protection functions; Easy installation and convenient maintenanceAffordable price; J4-D8V JCW-30QA   JCW-40QA JCW-48QA   NJK-5001C NJK-5001D   NJK-5001ANJK-5001B NJK-5002C NJK-5002D NJK-5002CD NJK-5002A NJK-5002B NJK-5002ABNJK-8002C NJK-8002D NJK-8002CD NJK-8002A NJK-8002B NJK-8002AB NJK-5003C NJK-5003D NJK-5003CD NJK-5003A NJK-5003B NJK-5003AB  Magnetic proximity switch LG5A3-10-J/EZ; LG5A3-10-J/DZ LG8A3-10-J/EZ LG8A3-10-J/DZ LG12A3-10-J/EZ LG12A3-10-J/DZ SD-1 SD-2 D-C73 D-A73 CS1-J CS1-U CS1-F CS1-S D-B54CS4H MS-1 MS-2 MS-3 MS-4 MS-5 MS-6 SD-3 SD-4 SD-5   D-Z73 D-A93CS1-G SG-1 SG-2 YG-1 MS-01 LJC1-3/24  Cylindrical photoelectric switch E3F01-2DN1-2L E3F01-2D2N2-2L E3F01-2DP1-2L E3F01-2DP2-2L E3F01-2DP2-2L E3F1-DS8C4& nbsp;E3F1-DS8B2    E3F1-DS8P1 E3F1-DS8P2  E3F1-R1NK E3F1-R1N2 E3F1-R1PK E3F1-R1P2 E3F1-3DN1-3L E3F1-3DN2-3L E3F1-3DP1-3L E3F1-3DP2-3L E3F-DS10C4E3F-DS10B2   E3F-DS10C3   E3F-DS10P1   E3F-DS10P2   E3F-DS10P3   E3F-DS10XE3F-DS10Y1 E3F-DS10Y2   E3F-DS30C4 E3F-DS30B2 E3F-DS30C3   E3F-DS30P1   E3F-DS30P2   E3F-DS30P3    E3F-DS30X   E3F-DS30Y1 E3F-DS30Y2   E3F- R2NKE3F- R2N2 E3F- R2N3  E3F- R2PK  E3F- R2P2 E3F- R2P3   E3F- R2X   E3F- R2Y1E3F- R2Y2 E3F-5DN1-5L E3F-5DN2-5L E3F-5DN3-5L E3F-5DP1-5L  E3F-5DP2-5LE3F-5DP3-5L E3F-5DX-5L E3F-5DY1-5LY E3F-5DY2-5LY   E3F3-D11   E3F3-D61E3F3-D31 E3F3-D81 E3F3-D12 E3F3-D62 E3F3-D32 E3F3-D82 E3F3-R11 E3F3-R61   E3F3-R31    E3F3-R81    E3F3-T11   E3F3-T61   E3F3-T31    E3F3-T81E3F3- DS70N1 E3F3- DS70N2 E3F3- DS70N3   E3F3- DS70P1   E3F3- DS70P1   E3F3- DS70P3   E3F3- DS70Y1   E3F3- DS70Y2  E3F3- R4NK   E3F3- R4N2      E3F3- R4N3   E3F3- R4PK   E3F3- R4P2   E3F3- R4P3    E3F3- R4Y1   E3F3- R4Y2E3F 3- 10DN1-10L & nbsp; E3F3- 10DN2-10L   E3F3- 10DN3-10L   E3F3- 10DP1-10L     E3F3- 10DP2-10L      E3F3- 10DP3-10L      E3F- 10DY1-10LY      E3F- 10DY2-10LYCDD-11N（40N） & nbsp;    CDD-11P（40P）