The VESDA Sliding Windows High Level Interface (HLI) links your VESDAnet* with PC software monitoring and
configuring tools such as Xtralis VSM4 and Xtralis VSC.
To configure and monitor devices on VESDAnet, your HLI must be connected to a VESDAnet socket card.
Direct Access to the Network
By interfacing with PC monitoring and configuring tools, the Sliding Windows HLI allows you to easily configure, manage and monitor your entire VESDA network.

Simple Configuration and Seamless Data Transfer
Your HLI is easily configured using your Xtralis VSC or Xtralis VSM4 software packages. The Sliding Windows
model provides seamless data transfer from your VESDAnet to your PC.
Designed for Small or Large Networks
VESDA Sliding Windows HLIs are designed to suit your individual system design. The VHX-0210 is ideally suited for small networks of up to 40 devices, while the VHX-0200 is designed for large networks of up to 200 devices.
Modem Support
The VHX-0210 has modem (dial-in or dial out) capabilities allowing you full remote notification and interrogation
functionality on networks of up to 40 devices.

• Direct access and monitoring of your entire VESDAnet system
• Designed for small or large networks
• VHX-0210 includes modem support for remote notification & interrogation
• Seamless data transfer from your VESDAnet to your PC
• Easily configured using Xtralis configuring and monitoring software packages

Listings / Approvals
VESDA HLIs are recommended for monitoring only. They are not approved for use as a primary reporting
device.