Power Supplies and Accessories FAQs
Your access control system is only as reliable as its power source. To help you build a secure and stable network, we have compiled answers to the most common questions about specifying, installing, and maintaining power units. Backed by over 16 years of hands-on installation experience, our team provides the practical advice you need to get the job done right.
If you cannot find the answer you need below, please contact our UK technical support team on 0333 880 4930.
Power Supply Selection
How do I choose between a 12V and 24V power supply?
Your choice depends entirely on the specific locking mechanisms and devices you plan to connect. We supply 12V DC power units for standard access control hardware, such as standard magnetic locks, keypads, and electric strikes. For heavier industrial setups, large automated gates, and heavy-duty locks, you will likely need a 24V system to deliver the extra power required to keep everything functioning flawlessly.
Which amperage rating do I need for my access control system?
We stock power supplies ranging from 1AMP up to 5AMP. To determine the correct size, you must calculate the total power draw of every device connected to the unit, including locks, readers, and exit buttons. You should always choose a power supply with a higher amperage than your total calculation. This provides crucial headroom, prevents the unit from overheating, and extends the lifespan of your hardware.
Battery Backups
What happens to my access control system during a power cut?
If the mains electricity fails, your system loses power. This is a massive security risk because fail-safe locks (such as magnetic locks) require continuous power to stay locked. When the power drops, these doors will instantly unlock and leave your building vulnerable.
Why should I install a lead-acid battery backup?
A sealed lead-acid battery is your primary defence against power cuts. Our 12V DC 7AMP backup batteries fit perfectly inside our metal-cased boxed power supplies. If the mains power fails, the battery instantly takes over. This keeps your doors securely locked and your access control system fully operational until the electricity returns.
Specialised Accessories
What is the purpose of timer relays in an access control setup?
Timer relays give you complete control over your daily lock schedules. You can wire a programmable timer directly into your power supply to automate when doors open and close. For example, you can set a main reception door to stay unlocked automatically during busy office hours, and then secure itself at night without anyone needing to turn a key.
When would I need to use an IFR or W2R relay?
Relays are essential problem-solvers for professional installers. You use components like the IFR11, IFR12, or W2R relays to safely switch higher voltages, isolate different circuits, or integrate your access control system with third-party hardware, such as linking a keypad release to an automated barrier or a building's fire alarm panel.
Trade and Technical Support
Do you offer bulk discounts for trade installers?
We actively help trade professionals, landlords, and facility managers increase their margins. When you buy your power supplies and accessories with us in bulk, you automatically unlock excellent tiered discounts at the checkout:
- Save 3% on orders over £250
- Save 10% on orders over £750
- Save a massive 15% on orders over £1,500
What if I need help wiring my power supply?
Wiring a power supply to multiple locks, exit buttons, and fire relays can quickly become complicated. Because we built this business on 16 years of professional installation experience, we actually understand the challenges you face on-site. If you get stuck, simply call our technical experts on 0333 880 4930. We will give you clear, practical advice to get your system powered up and running safely.