Best Fire Alarm Control Switch for Safety Compliance: 2025 Expert Review
Oli at OR Electrics
18th Edition Electrician & Owner
Fire alarm control switches generally confuse people—are we talking about the 'break glass' call point you hit in an emergency, or the isolation switch used to safely power down the system for maintenance? In compliance with BS 5839 (the UK standard for fire detection and fire alarm systems for buildings), both play distinctive roles.
For landlords in Leeds, specifically those managing HMOs, getting the right equipment installed is critical. I've seen too many systems with cheap triggers that jam or mains supplies wired directly into lighting circuits without proper isolation points.
In this review, I'm covering three essential components I frequently encounter: a budget break-glass unit, a high-quality resettable point (favoured for high-traffic areas), and the crucial mains isolator switch required for safe system maintenance.
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Specs vs. The Real World
The Spec: "Break Glass vs. Resettable"
"Glass units are cheaper and standard. Resettable plastic units are for convenience."
In student properties (like those in Hyde Park), break-glass units are a nightmare. Pranks or accidents mean buying replacement glass and risk of cuts. Resettable units save money and hassle in the long run.
The Spec: "Universal Compatibility"
"Any switch works with any alarm panel."
Not true. You must match the voltage and system type (conventional vs. addressable). Also, green units are strictly for door release (access control), while red is for fire notification.
My Top 3 Recommendations
Three options to cover different needs and budgets
KOCAN Emergency Door Release Glass Break Alarm Button Fire Alarm Swtich Break Glass Exit Release Switch
KOCAN
This is your standard, no-frills break-glass unit. It's primarily designed for emergency door release (often linked to fire systems in commercial settings). It relies on actually breaking the face-plate, making it a 'use-once' item until the glass is replaced.
The Good
- Very affordable price point
- Compatible with most standard access control systems
- Clear, universally recognised design
The Bad
- Requires replacement glass after every activation
- Breaking glass can be messy and create sharp shards
- Not suitable for high-traffic areas prone to false alarms
Installer Tip:
If you're fitting this in a narrow hallway in a Leeds terrace, ensure it's not at elbow height where it might get accidentally smashed. Also, always keep spare glass inserts on site.
Priced at £9.29 at the time of writing
Check Price on AmazonSecureMyDoor - Resettable Emergency Break Glass Call Point - Indoor Use
AMALOCKS
This is a significant upgrade from the break-glass models. The 'element' drops down when pressed to trigger the switch, but simply winds back up with a key. For HMO landlords or commercial premises, this is the gold standard for reducing maintenance headaches.
The Good
- Resettable key mechanism saves buying replacement glass
- No risk of injury from broken glass
- Durable ABS plastic construction
The Bad
- Higher initial cost than break-glass models
- You must not lose the reset key (store it safely!)
Installer Tip:
Mount this using a properly secured pattress box. In older brick properties, surface mounting is usually necessary as chasing out the back box can destabilise the plaster. The green colour signals 'Door Release'—do not use this as a primary fire alarm trigger (which should be red).
Priced at £24.97 at the time of writing
Check Price on AmazonFire Alarm Spur 230V Mains Isolator Key Switch Fused to BS5839 - Red
T2 Solutions
This isn't a button you press in a fire; it's the switch that keeps the system safe. This is a fused spur with a key switch, allowing an electrician to isolate the fire alarm mains supply without turning off the lighting circuit. It's a requirement under BS 5839 to prevent unauthorised switching off.
The Good
- Ensures compliance with fire safety regulations
- Double pole safety isolation
- Tamper-proof: Key is removable in both positions
The Bad
- Requires professional installation (Mains Voltage)
- Key can be stiff on new units
Installer Tip:
I install these high up or in a cupboard near the fire panel. The 'fish-tail' key design prevents tenants from accidentally turning off the fire alarm power, which is a massive safety risk in rental properties.
Priced at £23.99 at the time of writing
Check Price on AmazonFrequently Asked Questions
What is the difference between a red and green call point?
Do I need an electrician to install a fire alarm switch?
Why do I need a key switch isolator for my fire alarm?
How often should I test these switches?
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