Vesda HX-1320 Metal Box HLI Access Protocol

The VESDA Access High Level Interface (HLI) integrates VESDAnet1 networks with host monitoring platforms such as Building Management Systems (BMSs) and Fire Alarm Control Panels (FACPs).

The Access HLI acts as a proxy for all VESDA devices on the VESDAnet network, providing access to the rich status information available from VESDA detectors as well as the ability to control and configure these devices. The Access HLI is able to report alarms to the host within a few seconds of a detector reaching an alarm condition. Exact performance is dependent on the polling strategy and size of the monitored network. The Access HLI is able to support up to 100 VESDA detectors on a single VESDAnet network.

In its simplest configuration, the Access HLI provides a simple Master/Slave interface which allows the host to monitor and control the VESDA devices on a VESDAnet network. The Access HLI also supports a subscription mechanism allowing the host to be asynchronously notified of changes in the status of the monitored VESDA devices on a VESDAnet network. The host will be notified whenever the state of a device changes such as an alarm or fault condition being raised.

VHX-1320 Wall-Mounted Access HLI

The wall-mounted version is housed in a metal enclosure allowing for permanent mounting on a flat surface. With a built-in VESDAnet interface you don’t need a remote VESDAnet socket module making the wall-mounted HLI a cost effective solution to your interface requirements.