Seco-Larm
Downtown Door Repair & Security installs Seco-Larm door and window sensors, magnetic door holders, and alarm accessories as part of a security or access-control system — the components that tell an alarm panel when a door has been opened.
What we service
- Door and window contact sensor installation
- Magnetic door holder installation for fire-rated doors
- Integration with existing alarm panels and access-control systems
- Troubleshooting sensors that trigger false alarms or fail to report
How pricing works
Every Seco-Larm job is priced after an on-site diagnosis — no guesswork and no surprises. We diagnose what's needed, explain your options in plain language, and give you clear pricing before any work begins.
Request your on-site quote
Tell us what's going on — we'll get back to you with next steps and honest pricing.
Frequently asked
What does a door contact sensor actually do?
It's a two-part magnetic switch — one half on the door, one on the frame — that tells your alarm panel whenever the door opens or closes, whether or not the lock itself is engaged.
Can you add sensors to an alarm system that's already installed?
Yes — we can add Seco-Larm sensors and accessories to most existing alarm panels, matched to what the panel already supports.
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Learn moreNeed it handled today?
Call for same-day service across the five boroughs, or send a few details and we'll get right back to you.