The “MEGA” control unit is housed in 9-module box for DIN • rail. It is provided with analog and digital inputs for connection of the following devices:
• chip card or proximity card reader
• door-bell push button
• room activation panel
• bathroom temperature sensor
• room temperature sensor
• room temperature panel
• door open contact
• window open contact
• mini bar open contact
• bathroom pull cord for help call
• flood sensor
• volumetric motion sensor against intrusion
• “do not disturb” push button
• courtesy light push button
• door open push button from bed headboard

It is provided with relay outputs with voltage free contacts for 230Vac – 4(2)A loads to control:
• courtesy light
• room electricity contactor
• ON/OFF towel warmer electrovalve
• 3-speed fan-coil fan
• either ON/OFF fan-coil electrovalve or ON/OFF, modulating motorized or modulating linear radiator electrovalve (controlled with 0-10Vdc continuous voltage)
• AUX output to close electric shutters or water electrovalve in case of flood, switch-on balcony light or activate bell.

The control unit is also provided with 5 SCR outputs for out-of-door signalling (guest in room, do not disturb, room to clean, minibar to check, help call/flood) and one 12Vdc output, max. 1.2A for electric door lock. Data transmission over UTP CAT.5 bus cable with two wires, RS 485 standard. Flash-type reprogrammable microcontroller. 12Vac, 30VA power supply. Dimensions: 160x100x60mm. Weight: 0.50 kg.