INV company specializes in designing and manufacturing high-teck and stable hotel door locks since 1998. We provide mature standalone hotel lock system to help hotels gain security and high management effeciency.The INV hotel lock system composed of high quality locks, RF cards, encoder, data gather and hotel management software which is provided to customers for free. Other accessories for hotel rooms such as power-saving switches, bedside control panel, touch-screen room no. And doorbell also provided.