Which companies are currently making hotel room control systems, and find a reliable one? I worked with a passenger control company in Shenzhen before, and the garbage can't be opened directly.

Golden Horse Customer Control, gooday Customer Control, Pujie Customer Control, Dahang Customer Control and Dongfang CB Customer Control. According to what you said, that proves that you were really cheated by that guest. Didn't you sign a contract before? The industry standard is guaranteed for free for one year, or it can be negotiated for two years. After this period, it will be guaranteed for life, but this is what the hotel has to pay for. But if you can't do business directly, you can sue that company with the contract.