The i30 visual industrial telephone is a fully digital network type door machine, and its core part adopts mature VOIP solution, with stable and reliable performance; Hands free adopts digital full duplex mode, with loud and clear voice; The button feels comfortable, the installation is simple, the appearance is generous, it is sturdy and durable, and the power consumption is low. I30 video supports access control, voice industrial telephone, keyboard, ID card, and remote door opening functions