ASSA ABLOY DAC630 is both a communication device and an intelligent terminal block designed to be mounted at every door environment. An electric lock, motor lock, reader and opening button can be connected to each unit. The DAC630 is a Hi-O device that can be connected to a Hi-O bus, but it can also be used as a traditional DAC and then connected to non-Hi-O devices, such as readers, electric locks and opening buttons. Hi-O means that the devices have a built-in processor and communicate with each other to enable plug-and-play installation. With the help of Hi-O, each device can offer intelligent operational monitoring in real time