Every professional trade installer knows the frustration of a callback. When a newly fitted security system fails, returning to the site costs you time, eats into your margins, and damages your reputation. For electricians, locksmiths, and security installers, minimising these return visits is the key to running a profitable business.
The secret to a flawless installation lies just as much in the hardware selection as it does in your wiring skills. If you specify the wrong lock or an underpowered PSU, failure is inevitable.
In this guide, you will learn:
- How to conduct a rigorous pre-installation site survey.
- The fundamentals of power management to prevent voltage drops.
- How to integrate exit devices while maintaining strict UK fire safety compliance.
Pre-Installation Site Surveys
A successful installation is won or lost before you even pull a single cable. You must evaluate the physical environment to choose the correct locking mechanism.
The door type dictates your hardware choice:
- Wooden and UPVC doors: These are highly suited for an ANSI release (electric strike). It allows you to integrate with the existing mortice lock, keeping the mechanical handle functional for egress.
- Glass doors and heavy metal frames: Standard or mini maglocks are the go-to solution here. By using specialised U-brackets, you can fit maglocks seamlessly onto frameless glass.
- Double-swing doors: If a door pushes and pulls, an electronic drop bolt is the safest and most secure option, dropping a physical pin into the door structure when closed.
Additionally, you must evaluate the fire escape routes. If the door forms part of a fire exit strategy, you are legally required to use fail-safe hardware (like maglocks) that drop power and open instantly during an emergency.
Power Management for Access and Control
Power is the lifeblood of any access and control setup. Getting the power supply unit (PSU) right ensures stability across the entire network.
Getting the Power Supply Right
You must calculate the total current draw of your controllers, readers, and locks, and then build in a 20% to 30% safety buffer. Running a PSU at maximum capacity leads to overheating and eventual failure.
- 12V vs 24V: Most standard proximity readers and strikes run perfectly on 12V DC. However, if you are dealing with heavy 1200lb maglocks or running cables over long distances, step up to a 24V supply. The higher voltage combats voltage drop, ensuring the lock at the end of the line still receives enough power to hold firm.
- Battery Backups: Never leave a system vulnerable to mains power cuts. Fitting a reliable lead-acid battery backup inside your PSU cabinet ensures the local controllers retain their memory and doors function securely during temporary blackouts.
Integrating Door Exit Devices Flawlessly
Keeping unauthorised people out is only half the job; allowing occupants to leave safely is just as vital.
- Daily Egress: Standard "Press to Exit" buttons are effective, but heavily trafficked areas benefit significantly from infrared "No Touch" buttons. These contactless sensors reduce physical wear and tear on the microswitches and drastically improve hygiene in shared spaces.
- Emergency Override: To comply with UK fire safety standards, you must wire an emergency door release (a green break-glass switch) on the un-secured side of the door. This must be wired in series on the normally closed (NC) circuit directly to the lock's power supply. If the controller fails, breaking the glass instantly cuts the power, allowing safe evacuation.
Why Sourcing Professional Hardware Matters
When you quote for a job, it can be tempting to use cheaper, unbranded components to undercut the competition. However, cheap hardware simply cannot survive high foot traffic. Flimsy exit buttons stick, budget maglocks lose their holding force, and unbranded readers fail to register fobs.
Sourcing your kits from specialists who understand the trade makes all the difference. Because Door Entry Online was founded by former locksmiths and installers, every component we supply is selected for real-world reliability. We only stock hardware that we would be confident installing ourselves.
Conclusion
Reliable installations start with reliable suppliers. By assessing the door type correctly, managing your power loads, and adhering strictly to UK fire compliance with the right exit devices, you can eliminate callbacks and build a highly profitable installation business.
Open a trade account with Door Entry Online today! Unlock bulk-buy discounts of up to 15% on all your access and control kits and accessories to maximise your margins on every job.
