UniFi sensors and sirens: when a camera system becomes an alarm, and when you need a licensed alarm company
UniFi Protect can now arm sensors, sound sirens and, soon, call a monitoring center. What that covers, what it doesn't, and where New York's alarm-installer licensing law comes in.
A siren nobody hears
Illustration, not a real event: a small manufacturer outside Newburgh adds door sensors, a motion sensor and a siren to its UniFi camera system. One Saturday night the back door is forced. The siren sounds, the owner’s phone buzzes on the nightstand in silent mode, and nobody calls the police until Monday. The equipment worked. The design didn’t include anyone to respond.
Camera systems have quietly become alarm systems. UniFi Protect now runs door, motion and glass-break sensors, sirens and a hardwired alarm hub, and Ubiquiti has announced professional monitoring. That is useful. It also raises three questions owners rarely ask: who responds, does this replace our alarm company, and who is legally allowed to install it?
What the UniFi pieces do
Protect’s sensor line connects through a SuperLink Gateway. Ubiquiti says one gateway supports up to 96 SuperLink sensors, with range up to 2 km line of sight (actual range depends on the building), powered by PoE or USB-C (SuperLink Gateway Setup and FAQs). Ubiquiti’s store listed these Protect alarm devices on October 29, 2026 (Ubiquiti Store):
- Entry Sensor and Recessed Entry Sensor (doors and windows)
- Motion Sensor and Glass Break Sensor
- Environmental Sensor (for example, leaks and temperature)
- Siren and Siren PoE
- Relay (to connect other devices) and Remote Control KeyFob
- Alarm Hub Kit, described as a 32-zone alarm control hub for hardwired intrusion sensors, PoE++ powered with optional battery backup
- Smoke and CO Alarm (out of stock that day)
Alarm Manager ties it together: a trigger (a sensor opens, a person is detected after hours), a scope (which devices), and actions (notify people, send a webhook, turn on lights, sound the AI Horn Speaker, move a PTZ camera, lock or unlock doors). Some triggers take schedules, such as business hours only (UniFi Alarm Manager).
Professional monitoring is announced, not shipped
Ubiquiti’s help center says professional alarm monitoring, powered by Noonlight, is coming in UniFi Protect 7.4: keypad arming and disarming, trained agents who review events and dispatch emergency services, and a backup cellular path through the SuperLink Gateway High Availability. It will be US-only. The same page warns that some cities and counties require a permit for monitored alarms and fine unpermitted systems or false dispatches (Professional Alarm Monitoring Powered by Noonlight, checked October 29, 2026). Until it ships and you have read the terms, plan as if no one is monitoring.
Where the line is
| Need | UniFi alone can do it | You also need |
|---|---|---|
| Know when a door opens after hours | Yes: sensors, Alarm Manager, notifications | Named people who answer, with a backup |
| Scare off an intruder | Yes: siren, lights, horn speaker | A plan for what happens next |
| Someone calls the police at 2 a.m. | Not today; announced for Protect 7.4 | A monitoring service, and a local alarm permit where required |
| Fire detection for a commercial building | No | A code-compliant fire alarm system from a licensed fire alarm company |
| An insurer or lease requires a monitored or certified alarm | Check the exact wording | Often a licensed alarm company and central station |
On fire: Ubiquiti’s own compliance page for the Smoke and CO Alarm says smoke alarms “are not substitutes for complete fire detection systems in commercial, industrial, or multi-occupancy buildings,” and that its CO alarms are designed for residential use only (USL-Smoke Compliance Requirement). Keep fire and life safety on the system your code officials require.
New York: who may install it
New York General Business Law Article 6-D governs the “Business of Installing Security or Fire Alarm Systems.” Section 69-m says no person shall engage in the business of installing, servicing or maintaining security or fire alarm systems unless licensed under that article. Section 69-l defines an alarm system as one installed to detect intrusion, break-in, movement, sound or fire. Section 69-m exempts property owners installing alarms on their own property or at their own business (N.Y. GBL Article 6-D; § 69-l; § 69-m).
Read plainly, door, motion and glass-break sensors detect intrusion, break-in or movement, so a contractor you hire to install or service them looks like it falls within the article, whatever brand is on the box. This is not legal advice: confirm with your counsel, and ask any installer for their Article 6-D license before they start. Your own staff installing sensors at your own business is a different case under the owner exemption, but the response and permit questions above still apply.
This is also why SMC stays on the design side: SMC doesn’t sell, install or program alarm equipment. Licensed installers and monitoring companies contract with you directly.
The design
SMC’s preferred design uses UniFi sensors and Alarm Manager for after-hours awareness and deterrence, with a clear response plan, and adds a licensed alarm company where monitoring, insurance or code requires it:
- Decide what each alarm is for. Intrusion after hours, a door propped open during the day, a leak in the server closet. Each gets its own trigger and schedule.
- Name responders. At least two people per alarm, with a call order. A notification nobody is obliged to act on is not a response plan.
- Pair sensors with cameras so responders can look before they drive over or call.
- Use sirens and lights deliberately. They deter, but a siren in an empty building only helps if someone is told.
- Write down what triggers a police call, who makes it, and what they say.
- Check the requirements in your insurance policy, lease and local alarm ordinance, and get a licensed alarm company where they call for monitoring or certification.
Checklist
- Each alarm’s purpose, trigger, scope and schedule written down
- Two named responders per alarm, with phones set to deliver alerts
- Sensors paired with cameras for verification
- Insurance, lease and local permit requirements checked
- Installer’s Article 6-D license seen and recorded
- Fire and CO detection left to the code-required system
- Monitoring decision made, with the contract read
When to get help
SMC assesses the building, designs the sensor layout, alarm rules and response plan, and writes the specification. Licensed installers and monitoring companies contract with you directly; SMC reviews their bids and checks the finished system against the specification. SMC doesn’t take commissions. UniFi is our preferred platform; if your current alarm system fits, we design around it.
Start with the free security assessment at https://www.securitymedic.com/assessment. Physical security questions are covered there and on a free 30-minute call. You get a gap report to keep and a free results review.
Sources
- Ubiquiti Help Center, UniFi SuperLink Gateway Setup and FAQs, updated October 16, 2026.
- Ubiquiti Help Center, UniFi Alarm Manager, updated October 26, 2026.
- Ubiquiti Help Center, Professional Alarm Monitoring Powered by Noonlight (Coming Soon), updated October 20, 2026.
- Ubiquiti Help Center, USL-Smoke Compliance Requirement, updated August 28, 2026.
- Ubiquiti Store, Cameras and NVRs, Sensors & Alarms and Alarm Hub Kit product page, as shown October 29, 2026.
- New York State Senate, General Business Law Article 6-D, including § 69-l Definitions and § 69-m License required.