Hotel door lock software charges an annual fee

Simple door lock software generally has no annual fee, and professional hotel management software may have an annual fee, but generally the stand-alone version is also one-off. Only the online version has an annual fee because it needs to use the server. The x8 hotel management system I use only needs to pay the annual server fee, which is more than one year 1000 for three branches, which is still very cost-effective.