Wireless Technology : The DHF Wireless Clock System can synchronise clock networks in one or several buildings without any cables.
A secured time message is transmitted from the Master Clock to the slave clocks via HF radio waves.
Slave clocks pick up the message and automatically synchronise.
The radio frequency is part of the licence free ISM band (Industrial Scientific and Medical) according to ETS 300-220 European standard.
Documentation :
Wireless Clocks and Bells System
Note: The Wireless DHF System is expandable and can also synchronise your bells
Main advantages : 
• Reduce Maintenance (Automatic GMT/BST changeover)
• Suitable for existing buildings (No cabling)
• Easy installation (No business interruption)
• Always on time (Radio or GPS synchronised system)
Applications :
• Industrial or Public building refurbishment.
• Several building installations
Example : University Campus, Major production sites, locations separated by roads or highways..
Worldwide customers have chosen Bodet solutions for their application : 
• Education premises
• Transport (airport, railway)
• Healthcare buildings
• Finance offices ...