Edwards SIGI-OSHDI Intelligent Multisensor Optical-Heat Detector W/Isolation EN54

The Edwards SIGI-OSHDI is an intelligent multi-criteria smoke and heat detector with an integrated isolator, from the Signature Series range used on the Edwards EST4 life safety control platform. It combines a multi-criteria optical smoke sensor with a fixed-temperature heat sensor.

The heat and optical elements can report as separate event types or together. For example, the optical element can report a supervisory event during the day and an alarm at night, while the heat element always reports an alarm.

Key features

• Multi-criteria optical smoke sensor plus fixed-temperature heat sensor
• Integrated line fault isolator
• Heat and optical elements can report separately or together
• On-board processing compares sensor readings with known fire signatures before raising an alarm
• Self-diagnostics, with results stored in the device's non-volatile memory
• Automatic dirty or defective detector reporting
• Supports automatic device mapping by the Signature loop controller

Technical specifications

• Model: SIGI-OSHDI
• Type: intelligent multi-criteria optical smoke and heat detector with integrated isolator
• Protocol: Edwards Signature Series
• Loop controllers: 3-SSDC2-E / 3-SDDC2-E on EST4
• Data sheet reference: E85001-0711