We document everything. Every device we install is recorded with model, serial, location, warranty term, and configuration detail in an asset management system with QR-tagged records. When a device fails in year three, we know exactly what it is, when it went in, and whether it's still covered. When you need a system inventory for an audit, an insurance review, or a procurement, it already exists.
We plan for the handoff. Systems get inherited — by new facility managers, new IT staff, new owners. We build and leave behind documentation that survives staff turnover, because a security system nobody understands is a security system nobody maintains.
We stay after acceptance. Service response, inspections, monitoring, and system health are ongoing commitments, not an upsell we introduce after the install invoice clears.