Understanding Howler Systems in Fire Safety

Construction and short-term sites present unique fire risks due to variable layouts, mobile equipment, and dispersed work zones. A dependable alarm network is essential for quickly notifying everyone in case of danger. The Howler range – including GOLink, HO alarms, and site alert units – offers a scalable, customisable solution suitable for diverse environments.

What are HO Alarms?

HO alarms are self-contained, standalone units intended for mobile spaces such as site cabins or unconnected site areas. No hard-wired connection is required, making installation straightforward.

• High output: Typically 102 dB at 1 metre.


• Strobe integration: Optional units feature a strobe light alongside the audible siren.


• Durable casing: Many are IP-rated for external or semi-exposed conditions.

HO alarms augment main systems, securing areas not reached by the central site alert infrastructure.

The Site-Wide Site Alert Systems

The Howler Site Alert system is suited to smaller and medium-sized sites. Each unit can work alone or be wired together with up to 20 others. When activated, every linked alarm will sound and flash, ensuring comprehensive coverage.

• Audible warning: Approx. 100 dB at 1 m


• Visual cue: Built-in red LED beacon


• Best used where cable runs are straightforward

Wireless Variant

Where wiring is impractical, the Site Alert RF allows up to 30 devices to connect wirelessly to a master unit. With up to 1 km open-air range and multiple frequency channels, this setup is ideal for sprawling or temporary website layouts.

Hybrid arrangements using both wired and wireless units are common and offer better coverage.

Using the GOLink System Effectively

GOLink acts as a radio-linked backbone, supporting complete communication and coordination.

GOLink Interface Unit

This module connects Howler alarms to third-party infrastructure (e.g. CCTV, access control), allowing signals to cascade when an event occurs. Up to 127 stations can communicate over the GOLink network.

Dual Use Functionality

Some models, check here such as the H05 GOLink, incorporate separate fire and first aid switches. The latter sends a discreet assistance signal to a control point without triggering full evacuation unless specified.

Best Practices for Deployment

• Zone planning: Map the site into clear zones (e.g. cabins, workshops) and position units for optimal reach.


• Wired & wireless balance: Use wired alarms where infrastructure allows; RF units in more temporary areas.


• Regular testing: Weekly or monthly inspections to confirm functionality and battery levels.


• Staff training: Make sure all personnel understand alarm tones, first aid indicators, and emergency response steps.

FAQs

How many alarms can I link together?

Up to 20 wired Site Alert units using 2-core cable.

How far does it reach?

Approx. 1 km in open air (may reduce with obstacles).

Is a panel required?

No. HO alarms operate independently without central panels.

Integration options?

Yes, via the Interface Unit. External systems such as CCTV and turnstiles can be integrated.

What is an alarmed switch cover?

It reduces false alarms by requiring cover removal before pressing. An alert sounds if tampered with.

Hybrid system support?

Yes. Mixed networks are common and synchronised through the GOLink system.

First aid switch impact?

No. The signal is isolated unless configured otherwise.

Final Thoughts

Effective fire safety relies on adaptable, clearly communicated alarm strategies. The Howler range, including HO alarms, Site Alerts and GOLink systems, provides robust protection for sites of all types. For product specifications, planners, or live demonstrations, visit the Howler section at FireSense.