Description

55000-852APO – Apollo Sounder Control Unit with Isolator

The Sounder Control Unit with Isolator is used to control the operation of a zone of externally powered sounders, visual indicators and VADs and to report their status to Apollo compatible control equipment.
The Sounder Control Unit with Isolator allows the devices to be operated continuously or be pulsed, 1 second on, 1 second off. Devices may be operated individually or in groups and, whichever address mode has been applied, may be synchronised when in pulsed operation.
An opto-coupled input is provided to monitor the state of the external power supply.
The Sounder Control Unit with Isolator is fitted with a bi-directional short-circuit isolator and will be unaffected by loop short-circuits on either loop input or output. For further information on isolators please refer to datasheet PP2090, available on request.

Key Features
  • Allows sounders to be operated continuously or be pulsed; 1 second on, 1 second off
  • May be synchronised with loop sounders