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Part Number or the Week S3EP-V-VAD-HPR-R

VESDA Metal box HLI - Modbus Type 3

Part no.VHX-1420
BrandVESDA
RangeVESDA Programming and Connectivity
VESDA VHX-1420 Modbus Type 3 HLI Metal Box — grey metal lid over black base, 'VESDA High Level Interface' on front

Image for illustration; item supplied may differ

At a glance

  • Wall-Mounted Modbus Type 3 HLIVHX-1420 is the VESDA Modbus Type 3 HLI Metal Box, wall-mounted.
  • Integral VESDAnet InterfaceThe built-in VESDAnet interface removes the need for a remote VESDAnet socket module.
  • Metal Enclosure MountingThe metal box mounts permanently to a flat surface.
  • Power And ConsumptionIt operates from 24 VDC with 70 mA (Quiescent) current consumption and 1.68 W (Quiescent) power consumption.
  • Unit WeightIt weighs 4.4 lbs (2 kg).
  • RS-485 Host ConnectionThe host interface is RS-485 (to HOST).
  • Detector SupportIt supports up to 100 detectors, covering VESDA VLP, VLS, VLC, VLF, VLI and VFT-15 detectors and VESDA-E VEU, VEP, VES and VEA detectors.
  • Warranty And LifecycleProduct warranty is 2 years and the model is discontinued, with a last time buy of 31 May 2026.
DescriptionSpecificationsOptional accessoriesSpares & replacement parts

Description

Specified where a host platform must watch a VESDAnet network, this wall-mounted metal box carries the VESDA Modbus Type 3 HLI function, linking that network to a BMS or a Fire Alarm Control Panel. Commissioning uses the Xtralis configuring and monitoring software packages.

Detector coverage takes in the VESDA VLP, VLS, VLC, VLF, VLI and VFT-15 units alongside the VESDA-E VEU, VEP, VES and VEA. It works with a VESDAlink RS-232 9-way serial cable (male-female) and a VESDAnet RS-485 15-way cable (male-female), available as spare parts VSP-509 and VSP-511. Warranty on the product runs to 2 years, and the model is now discontinued, its last time buy dated 31 May 2026.

Read the full technical description

VHX-1420 is the wall-mounted form of the VESDA Modbus Type 3 High Level Interface, an HLI for integrating a VESDAnet network with host monitoring platforms such as Building Management Systems (BMSs) and Fire Alarm Control Panels (FACPs), where it acts as a proxy for all VESDA devices on the network. The metal enclosure allows the unit to be fixed permanently on a flat surface, while an on-board VESDAnet interface means no separate VESDAnet socket module has to be fitted remotely.

Up to 100 detectors are supported, spanning VESDA VLP, VLS, VLC, VLF, VLI and VFT-15, together with VESDA-E VEU, VEP, VES and VEA. The host connection is RS-485 (to HOST). The unit takes a 24 VDC supply, with quiescent consumption of 70 mA and 1.68 W, and it weighs 4.4 lbs (2 kg).

Product warranty is 2 years. This model is discontinued, with a last time buy of 31 May 2026.

Specifications

DescriptionVESDA Modbus Type 3 HLI Metal Box Wall-mounted
Enclosurehoused in a metal enclosure allowing for permanent mounting on a flat surface
Integral interfacebuilt-in VESDAnet interface (no remote VESDAnet socket module required)
Ordering codeVHX-1420
Supply voltage24 VDC
Current consumption70 mA (Quiescent)
Power consumption1.68 W (Quiescent)
Number of detectors supportedUp to 100 detectors
Dimensions11 in. x 7.3 in. x 2.2 in. approx. (280 mm x 185 mm x 55 mm)
Weight4.4 lbs (2 kg)
Product warranty2 years
Host interfaceRS-485 (to HOST)
Lifecycle statusDiscontinued (Last Time Buy 31 May 2026 due to limited component stock)

Specifications per manufacturer documentation, subject to change. E&OE.

Optional accessories

+ 3 more

Spares & replacement parts