Each VOCALARM™ is synchronised by the use of a high crystal oscillator.

Clarity is maintained via the use of a high quality digitised voice messaging system that makes use of a low current drive circuit. For two stage alarms, a continuous tone is added to the VCL01. Separate alert and evacuation messages may be selected for the VCL02.

With a growing choice of messages for a wide variety of applications including fire, security and factory automation, the VOCALARM™ gives increased flexibility for those requiring the very best human response in an emergency situation.

Note that each message is preceded by a 6 second sweep tone as standard, in line with BS5839.