ASSA ABLOY ARX Power is a compact all-in-one solution for the ARX Security System. In addition to built-in battery backup, the device also holds two card slots for, for example, door control units, central unit, and input and output units.ARX Power is therefore not equipped with any cards from the start, but a smart battery backup with options for a variety of purposes where installation space, extra power and battery are required. The unit reflects ARX Power's understated, stylish design, with a passive construction that conducts heat without fans, making it completely silent.