These 30 questions to ask your access control installer are written for buyers who want a reliable access control system that holds up under real conditions, not just a neat quote. They help you compare security providers, confirm the right access control system for your business security, and reduce the risk of scope gaps that lead to faults, delays, and security incidents later.
Use the questions as a checklist in discovery calls, site walks, and proposal reviews. A good installer will answer with specifics, explain tradeoffs, and describe how the system will operate during outages, staff changes, and busy periods across your doors and sites.
Door Schedule And Scope Clarity
- Can you provide a door schedule for every door (per door: lock type, reader type, REX, DPS, power method, fire interface, and notes on egress)?
- Which doors are in scope for access control (interior doors, exterior doors, restricted areas, plant rooms), and which doors should remain mechanical?
- How will you confirm the condition of each opening (frame alignment, closers, latching, door hardware compatibility) before installing access control?
- What are the assumptions in your scope that could trigger variations (new cabling, extra power supplies, door repairs, additional devices, upgrading locks)?
- What does “complete installation” include in your proposal (commissioning, as-builts, user training, testing, configuration backups, and handover)?
Locks, Hardware, Egress, And Safety
- For each door, what lock type fits best (electric strikes, magnetic locks, electrified lever, mortice, smart lock) and why?
- For each door, is it fail-safe or fail-secure, and how does that choice align with safety, perimeter protection, and the way your facility must operate?
- How will fire and emergency egress be handled (including fire alarm release where required and safe exit paths during power loss)?
- Do any doors require panic hardware, crash bars, or special exit devices, and how will that affect the installation and compliance?
- Will you include REX devices (motion REX, push button, exit bar switch) and what is the rationale for each door?
- Will you include door position switches (DPS) on critical doors, and what events will they trigger (door held open, forced door, tamper alerts)?
- What is your approach to door hardware issues that commonly appear after installing access control, such as doors that do not latch, misaligned strikes, or weak door closers?
Readers, Credentials, And Security Standards
- Will you use OSDP Secure Channel or Wiegand, and what is your rationale based on security requirements and device supervision?
- What credential strategy do you recommend (mobile credentials, DESFire, SEOS, pin codes, or hybrid) and why is it the right system for our risk level?
- How will you protect against common credential risks such as cloning, shared cards, and poor offboarding when an employee leaves?
- How will you handle temporary access for contractors and visitors (time-limited access, QR codes, PINs, approval workflow, expiry rules)?
- Do you support multi factor authentication for high-risk areas (card plus PIN, mobile plus PIN, biometric plus card), and where do you recommend it?
- How will you manage enrolment and issuance across the business (who issues credentials, how identity is verified, and how access is revoked)?
Wiring, Power, And Installation Engineering
- What cabling and wiring standards will you use for readers, locks, DPS, and REX, and why are they appropriate for our site?
- What maximum cable distances will you design for, and how will you validate and test them during commissioning?
- How will you size and locate power supplies (inrush current, duty cycle, battery backup, future expansion), and which doors are protected during a power outage?
- How will you interface door hardware with power and safety systems, including any fire release requirements for magnetic locks?
- How will you document the installation (as-built drawings, door schedule updates, device addressing, controller locations, labels, and test results)?
- What is your plan to minimise disruption during installing access control, particularly for occupied sites with high-traffic doors?
System Architecture, Outages, And Day-To-Day Operation
- What architecture are you proposing (cloud based systems, on-prem, or hybrid), and why is it the right access control system for our business?
- Where does the system make decisions (at the door controller, at the server, or via cloud computing), and what happens when the internet connection fails?
- How will the system behave during outages (power loss, controller failure, server down, WAN down), and how will staff still gain access where required?
- What is the plan for audit logs and reporting (access events, failed attempts, forced doors) and how will this support investigations and compliance?
Network, Cybersecurity, And Integrations
- What cybersecurity controls will you implement (RBAC, MFA for admin accounts, certificates, least privilege, secure remote access, logging), and how will you align with IT?
- How will you integrate other security systems such as security cameras and video surveillance, alarm systems, and intercom, and what licenses, dependencies, or costs exist on each side?
Frequently Asked Questions
What Should A Good Access Control Installer Provide Before Work Starts
A good installer should provide a door schedule, a clear scope, a wiring and power plan, and an explanation of how the system will operate during outages. They should also confirm how access will be managed when staff change, including when an employee leaves.
Why Do I Need To Ask About OSDP Secure Channel And Credentials
Because reader protocol and credentials determine security posture. If your installer defaults to weak options, you may end up with avoidable risks like cloning, poor audit trails, and gaps that lead to security incidents.
What Is The Biggest Mistake Businesses Make When Installing Access Control
The most common mistake is treating it as a simple technology install and missing door hardware, egress, power sizing, and how the system should operate when internet or power fails.
How Do I Compare Quotes From Different Security Providers
Compare the engineering detail, not just price. The right system includes door hardware choices, power and wiring, outage behaviour, access policies, and support. A cheaper quote often becomes expensive through variations and maintenance.
Conclusion
If a provider can answer these 30 questions to ask your access control installer clearly, they are thinking about how your security system will operate in the real world, including doors, locks, credentials, outages, and ongoing management.
That is what prevents messy installs, reduces downtime, and ensures only authorised personnel can access restricted areas while the business continues to operate smoothly across doors and multiple locations.
If you want an expert review before you sign off, Castle Security can assess your access control systems requirements, validate proposals, and identify scope gaps that could affect security, cost, and reliability.
Contact Castle Security to book a design review so you can choose the right access control system and get an installation that works properly from day one.
