Managing Fire Hazards on Site

Construction sites, especially those in a transitional phase, present distinct fire hazards due to shifting layouts, relocatable equipment, and divided workforces. A reliable alerting system is necessary for ensuring all personnel are aware without delay. The Howler range, including the GOLink system, HO units, and site alert models, provides a scalable safety setup to match various site demands.

A Look at HO Alarms

HO alarms are self-powered, battery-operated devices used where hard-wired installations are not viable. Ideal for portable cabins or outbuildings, they function autonomously.

• Loud alarm: Around 102 dB at a metre’s distance.


• Optional strobe: Some models include integrated lights for visibility.


• Weatherproof: Many are suited for outdoor use or partially exposed areas.

These alarms provide supplementary coverage where the core alert network may not reach.

The Howler Site Alert Range

Suitable for compact projects, the Site Alert system can work as standalone or in groups of up to 20 units using a simple two-core cable. When triggered, all devices in the series respond simultaneously.

• Approx. 100 dB sound level at 1 metre


• Built-in visual LED for loud or noisy settings


• Ideal where cabling is straightforward

Going Wireless: Site Alert RF

Where cable routes aren't possible, Site Alert RF links up to 30 units over wireless. It has an line-of-sight range of around 1 km and supports multiple channels for interference avoidance.

Blending wireless and cabled systems is commonly the best strategy for sites with varying structures.

Integrating the GOLink System

The GOLink system acts as a communication core for large, multi-zone installations, using wireless signals to link alarms.

GOLink Interface Connections

Through the Interface Unit, it’s possible website to link turnstiles, autodiallers, CCTV, and other site safety components. Up to 127 points can connect across a site-wide network.

Dual-Function Features

Certain models (e.g. H05 GOLink) include a first aid button alongside the fire alert. The first aid signal quietly notifies the control team, allowing medical needs to be flagged without general evacuation.

How to Deploy Effectively

• Zone assessment: Identify where alarms need to be heard or seen, dividing the site into manageable sectors.


• Choose connection types wisely: Use hard-wired alarms where feasible, supplementing with RF in distant or pop-up areas.


• Set a maintenance routine: Schedule weekly testing and check battery levels.


• Training & signage: Ensure instructions are posted and team members know how to respond to alerts.

Common Questions

How many devices can be wired together?

Up to 20 Site Alert units can be connected using 2-core cable.

What’s the wireless range of Site Alert RF?

Approx. 1 km in open-air conditions, though physical obstructions can reduce range.

Do HO alarms need a base station?

No, HO models are standalone and do not require central control.

Can GOLink interface with other site systems?

Yes, external systems can be connected via the GOLink Interface Unit.

Purpose of switch protection?

It reduces false alarms by sounding a warning if tampered with before activation.

Can both cabled and RF alarms work together?

Yes, the GOLink system allows wired and wireless units to operate on the same network.

Will first aid alerts trigger full alarms?

No. It sends a targeted alert to designated receivers without activating evacuation systems—unless configured otherwise.

Final Notes

Whether get more info your project involves one zone or several, Howler alarms—HO, GOLink, and Site Alert—offer solutions that adjust to varying conditions. For product information, planning tools or live demos, visit the Howler section on FireSense.