The XEM is a BACnet Application Specific Controller (B-ASC) for Building Automation Systems (BAS ). The XEM allows reliable direct Ethernet connections and was the first listed BACnet/Ethernet device in the world. Controls are performed by 32-bit microprocessor digital technology. The control program is saved onto flash memory. Running data is held in Ram, but it can be supported for approximately 72 hours in case of power failure by means of a battery backup.

The Input and Output modules are : Analog Input module(AI) , Analog Output module(AO), Digital Input module(DI) and Digital Output module(DO).AI has 16 physical points. AO has 8 physical points. DI has 16 physical points. DO has 8 physical points.  The XEM input and output modules can provide a total of 128 physical points. The XEM is supported distributed I/O module.  

This is a Building Controller for Building Automation System (BAS). In addition to control applications for Heating, Ventilation, Air Conditioning the system. This system allows directly connection to other router device. This system is performed by powerful 32-bit microprocessor digital technology. The control program is saved onto a flash memory. Running data is held in RAM, but it can be supported for approximately 72 hours in case of power fail by means of battery backup. It has 16 analog/digital inputs, 8 analog/digital outputs also can provide a total of 128 physical points within max. 16 I/O modules.