# Fifth Lichuang Electronic Design Competition# Yiweilian four-way WIFI relay module

I saw various YiWeiLian 4-way switches on Taobao, and any one of them costs 60 to 70 yuan (the first time I came across it was when someone at home came to install an YiWeiLian module, and it cost 500 yuan!! It was really a scam), so I If you want to make a few similar YiWeiLian four-way, you have to add a 433 or 315 module interface, so that you can control it with a mobile phone and a remote control. If you make a case, you can also use manual buttons, which should be reserved in advance. , the indicator light should also be reserved. Then we can update many traditional smart furniture modifications on this basis, such as traditional electric doors to mobile phone control, traditional switches to mobile phone network control, and the YiweiLink module can communicate within and outside the network. The 1st and 2nd pictures are from the first generation. They had many problems and were eliminated. Pictures 3 and 4 are the final product pictures