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- Standard Range
All of Apollo's Interfaces are Isolated as Standard with the exception of the Mains Switching Input/Output Unit which is non isolated. They are fitted with bi-directional short-circuit isolators so that they are unaffected by a single short circuit on either loop input or output. However, the Input/Output Unit and Output Unit are exceptions to this. The removal of loop power to these interfaces will cause a 'set' relay to 'reset'.
Interfaces without Isolators are available on request.
Input/Output Unit
The Input/Output Unit provides a voltage free, single pole, change-over relay output, a single, monitored switch input and an unmonitored, non-polarised opto-coupled input.
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Three Channel Input/Output Unit
The Three Channel Input/Output Unit provides three voltage-free, single pole, changeover relay outputs and three monitored switch inputs.
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Output Unit
The Output Unit provides a voltage free single pole change-over relay output. It is a simplified version of the Input/Output Unit without circuitry for monitoring inputs.
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Sounder Control Unit
The Sounder Control Unit is used to control the operation of a zone of conventional sounders and report their status to the control panel.
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Switch Monitor
The Switch Monitor is designed to monitor the state of one or more single pole, volt free contacts and report the status to Apollo compatible analogue control equipment.
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Switch Monitor Plus
The Switch Monior Plus has the same functionality as the standard Switch Monitor, but incorporates additional circuitry to monitor flow switches and provide a time delay in so doing. It also contains circuitry which can be used to reset a beam detector.
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Zone Monitor
The Zone Monitor powers and controls the operation of a zone of up to 20 Apollo Series 65 or Orbis fire detectors from a Discovery or XP95 loop.
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Mains Switching Input/Output Unit
The Mains Switching Input/Output Unit provides a voltage-free, single pole change-over relay output and a monitored switch input.
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