C
Cyrano Security
13 min read
Security alarm monitoring, post-central-station

Every guide on this keyword sells the central station. This one is about what happens when the alarm is already verified before it leaves the building.

The traditional alarm-monitoring pipeline is a panel sensor, a phone line, a central station operator, a verification call, and then maybe a police dispatch. It exists because panel sensors trip on nothing: a curtain, a pet, a dust-bloom on a PIR. Someone has to pick up the phone and decide if it is real.

The HDMI edge-tap moves that decision. The AI on the device sees the multiview, classifies the event, writes a 480x270 JPEG of the triggering tile, and emits the alarm with the thumbnail already attached. The monitoring operator does not verify. They act.

4.9from 50+ properties
Verified alarm at emit time: event_class + 480x270 tile thumbnail + recorder deep link
412,803 candidate detections filter down to 241 emitted alarms per 24 hours
No central station round trip, no zone-label phone tree, no $25 per-camera subscription
Works on the DVR already bolted to the office closet wall

What the top alarm-monitoring pages all describe

Read the first page of results for this keyword. ADT, Emergency24, Pye-Barker, Smith Thompson, GeoArm, and the Yelp-style directory of local alarm companies all describe the same product in slightly different wrappers. A panel with door contacts and motion sensors trips. The panel dials a UL-listed central station. A human operator reads the zone label on a screen and runs Enhanced Call Verification: first call to the primary contact, second call to the secondary, then a dispatch to local PD if nobody answers. The monthly fee pays for the operator and the UL station.

That pipeline exists because the signal from the panel is unverified. A door contact does not know if a tenant just came home or if someone broke the glass next to it. A PIR does not know if a cat walked past or if a masked figure did. The entire $40-billion central-station industry is built around the fact that the sensor tells you "something," and a human has to decide what.

That assumption is what an edge-AI camera pipeline breaks. When the sensor is the camera and the classifier runs on-device, the alarm is not "zone 14 tripped." It is "event_class=person_in_zone on tile.label=Pool Gate East at 2:14:07 AM, here is the thumbnail." The verification step does not get faster; it gets deleted.

The central-station pipeline vs the verified-alarm pipeline

Two diagrams of the same 2:14 AM event, one through a traditional panel contract and one through the HDMI edge-tap. The second diagram has fewer actors because the verification step is no longer a hop, it is an attribute of the emit.

TRADITIONAL PANEL + CENTRAL STATION

PanelCentral StationPrimary ContactLocal PDzone 14 tripped (unverified)ECV call #1no answerECV call #2no answerdispatch request (still unverified)en route, ETA 11 min

HDMI EDGE-TAP, VERIFIED ALARM

DVR HDMICyrano DeviceOperator InboxLocal PD25-tile multiviewclassify + mask + zone + persist + dedupverified alarm + 480x270 thumbnaildispatch with thumbnail as ECV evidenceen route, ETA 11 min

The anchor: 241 pre-verified alarms from 412,803 candidates

This is the load-bearing number for the whole page. The claim "the alarm is the verification" only holds if the emission rate is tight. These counts are from one 24-hour audit window at a 16-tile Class C multifamily property in Fort Worth, Texas, running a Hikvision DS-7716NI-K4 recorder on a 4x4-std multiview layout. Same deployment, same 24 hours, recounted from the on-device suppression log.

Candidate detections
0
Everything the detector saw in 24h
Killed on device
0
Never reached an operator
Verified alarms emitted
0
Each with thumbnail + deep link
Emission rate
0%
Pre-verified, not post-hoc
Anchor fact

241 alarms per 24 hours, every one with a JPEG of the actual event.

Each verified alarm is a 9-field event JSON plus a 480x270 pixel JPEG cropped to the exact tile that fired. Mean payload is under 50 KB. This is why the operator no longer needs to scrub video to decide if the event is real: the event arrives with its own frame of evidence already cropped, classified, and timestamped against the recorder clock. A human reviewing the inbox sees 10 items an hour across the property, not 17,000.

What a pre-verified alarm actually looks like on the wire

Nine fields and a pointer to a thumbnail. No zone label, no keypad PIN, no phone tree. The event_class has already been decided on-device, the overlay_mask confirms the inference did not fire on the DVR's own clock stamp, and the tile.coords pinpoint where in the composite frame the detection landed. This is the entire operator-inbox footprint of one alarm.

verified_alarm.event.json

Where the verified alarm goes next

The device does not decide the response path. It emits the alarm with a thumbnail and a recorder deep link, and the operator policy decides where it goes. Four routing destinations are typical on multifamily deployments, and an event can fan out to more than one at a time.

Verified alarm fan-out from the edge device

tile.label (camera name)
event_class (person/vehicle/loiter/tamper)
480x270 thumbnail of the tile
recorder deep link
Verified alarm emit
Operator inbox + dashboard
SMS / push to property manager
ECV evidence for local PD
White-label response vendor

Central-station pipeline vs verified-alarm pipeline

Same 2:14 AM event, two monitoring pipelines

The panel sees an unverified zone trip. It calls a UL-listed station. A human operator reads 'Zone 14: Kitchen Door' on screen and begins ECV. Two phone calls later, dispatch is requested, still without anybody having seen what is on the other side of Zone 14. The video add-on, if the customer paid for it, exists on a separate subscription with its own lag.

  • Alarm is a zone label, not a classified event
  • Verification is two phone calls (ECV)
  • Police arrive to an unverified call, eligible for a false-alarm fine
  • Video (if any) is a separate cloud product with its own contract

What a verified alarm saves, per dispatch

0Verified alarms emitted / 24h / property
0%Detection-to-alarm emission rate
$0Typical false-alarm city fine (per event)
0 minInstall time per property, HDMI passthrough

The $50 number is the low end of the false-alarm ordinance schedule in the largest US cities. Los Angeles, Dallas, Phoenix, Chicago, and most of the Sun Belt multifamily markets use escalating fines: first false dispatch is waived, second is $50 to $100, third is $150 to $200, and the fifth and beyond can run $300 to $400 or trigger a response suspension. Over a year, a property with five to ten panel false dispatches easily burns $500 to $2,000 in pure ordinance fines. A verified alarm with a thumbnail does not fall into that bucket because it is, by construction, not a false dispatch.

What you need vs what you do not need

The surface area of a verified-alarm deployment is much smaller than a panel + central-station + video add-on stack. The checklist on the right is what is actually required to stand up monitoring on an existing multifamily DVR.

What you no longer need

  • UL-listed central station contract
  • Per-camera cloud subscription
  • Panel keypad PINs handed out to every tenant
  • Enhanced Call Verification phone tree
  • Replacement of existing DVR / NVR
  • RTSP / ONVIF integration work per camera

What you actually need

  • Existing DVR or NVR with an HDMI output
  • One Cyrano device per property (HDMI-in, HDMI-out)
  • Ethernet or Wi-Fi on the property network
  • Operator inbox (yours, white-label, or both)
  • Up to 25 feeds per unit on the recorder's multiview
  • Overlay_mask template for the recorder brand

Feature-by-feature against the central-station playbook

FeatureCentral station (panel + ECV)Verified alarm (HDMI edge-tap)
What the alarm containsZone label + timestampevent_class + tile.label + 480x270 thumbnail + recorder deep link
Who verifiesHuman operator via ECV phone treeOn-device AI at emit time (four-stage filter)
Alarm volume per 24h per propertyDozens of unverified trips + ECV churn241 classified events, 0.058% of candidates
False-alarm city fine exposureRecurring; fines escalate 2nd trip onwardNear-zero; thumbnail preempts false-dispatch billing
Monthly cost at 16 cameras$15 to $50 + $10 to $25 per camera video add-on$200 flat per property (camera count up to 25)
Install timeDays to weeks (panel + sensors + central integration)Under 2 minutes (HDMI passthrough)
Offline durabilityPanel cellular fails together with IPEvents queue locally, drain on reconnect
Portfolio viewPer-contract dashboard, limited aggregationOne inbox, all properties, same event schema
Privacy postureRaw video on vendor cloud (if video is enabled)Raw video stays on the recorder; only events sync
Compatible recordersRequires vendor-branded panels + camerasWorks with any DVR / NVR that outputs HDMI multiview

What an operator actually does now

The monitoring role does not disappear. It gets a different job description. Each verified alarm is already a real event with a picture attached. The human work is deciding the response path, not relitigating whether the alarm is real.

Triage by event_class and tile.label

The inbox groups alarms by class (person_in_zone, loiter, vehicle_dwell, tamper) and by camera-name strip the DVR stamps itself. The operator starts with HIGH-threat classes on sensitive tiles (gate, mailroom, pool, mechanical rooms) and works down.

Route to the right response

Push to on-site guard, SMS to PM, ECV packet to PD, armed response vendor, or auto-dial tenant. Each event_class can carry its own policy per property.

Click into the recorder for full clip

The thumbnail is enough for the response decision. If the clip is needed for incident reporting or insurance, the deep link opens the exact recorder timestamp on demand. The clip never stages through the cloud.

Close the loop in the event record

Each alarm carries a disposition field. Closed-resolved, closed-false, dispatched, escalated. Exports drop into monthly owner and insurance reports without a separate workflow.

Tune per-tile thresholds weekly

The suppression_audit log shows which filter stage each dropped detection hit and why. Use it to tighten zones or mask new overlays.

DVR and NVR brands this already runs on

The HDMI edge-tap only helps if the device knows where the recorder stamps its overlays (clock, channel bug, camera-name strip). Cyrano ships overlay templates for the recorders commonly found in Class B/C multifamily DVR closets.

Hikvision DS-7xxxDahua XVR / NVRLorexAmcrestReolink NVRUniviewSwannNight OwlQ-SeeANNKEEZVIZBosch DIVARHoneywell PerformancePanasonic WJ-NX

Rollout end-to-end

1

Unplug the HDMI cable from the guard monitor

Usually a single cable from the DVR in the office closet going to a wall-mounted monitor in the lobby or back office. Leave the monitor powered on; the Cyrano unit passes the signal back through.

2

Plug that cable into the Cyrano unit, pass through to the monitor

Cyrano has HDMI-in and HDMI-out. The multiview reaches the guard monitor unchanged. Inference runs on captured frames on-device; the guard does not see anything different.

3

Connect the unit to the property network

Ethernet preferred, Wi-Fi supported. The unit auto-detects recorder model, layout_id, and overlay template from the multiview at boot. No DVR creds, no RTSP, no ONVIF.

4

Point the operator inbox at the property

Claim the device from the dashboard. tile.label strings come from the camera-name strip each tile already has. Default zones are full-tile and get narrowed later. Events start flowing upstream on first boot.

5

Decide response policy per event_class

HIGH-threat classes (loiter after hours, tamper) route to armed response or PD ECV evidence. LOW-threat classes (delivery window) route to an inbox batch. Policies are per-property and per-tile.label.

20

At one Class C multifamily property in Fort Worth, Cyrano caught 20 incidents including a break-in attempt in the first month. Customer renewed after 30 days.

Fort Worth, TX property deployment

See a verified alarm land in the inbox, with your own DVR

15-minute walkthrough. We plug Cyrano into the HDMI output of your recorder, fire a live event, and show you the thumbnail + recorder deep link arrive in the operator inbox before the central-station phone tree would have even finished ECV call #1.

Book a call

Frequently asked questions

What does 'security alarm monitoring' usually mean on the first page of Google?

It means a central station contract. A panel sensor (door contact, motion PIR, glass break) trips, the panel dials the central station over cellular or IP, a human operator reads the zone label, calls the property to verify it is not a false alarm, and only then dispatches police. ADT, Emergency24, Pye-Barker, Smith Thompson, and GeoArm all describe variations of this same pipeline. The monthly fee ($15 to $50 per month) and the per-camera-pricing on the video add-on exist to pay for that human operator and the dispatch relationship.

What is the 'verified alarm' inversion this page is about?

When the AI runs on the DVR's HDMI output, the classified event IS the alarm. There is no unverified signal arriving at a central station with a zone label attached. The alarm arrives with an event_class (person_in_zone, loiter, vehicle_dwell, tamper), a tile.label pulled from the recorder's own camera-name strip, a 480x270 JPEG thumbnail of the triggering tile, and a deep link to the exact timestamp on the recorder. The verification already happened on-device. The operator's job collapses from 'scrub video to decide if this is real' to 'decide what to do about this verified event.'

Why does 0.058% matter for alarm monitoring?

On a 25-tile DVR multiview, the detector produces about 412,803 candidate detections per 24 hours. The four-stage filter pipeline (overlay_mask, tile-grid zones, multi-frame persistence, tile.label dedup) drops 99.942% of those before anything crosses the network. Only 241 events become alarms. That is a 0.058% emission rate. It is what makes the 'the alarm is the verification' claim actually hold: if you emit a fraction of a percent of candidate detections, each surviving event has already passed four independent suppression checks.

What about false alarm fines from the city? Does this change that?

Yes. Most municipalities (Los Angeles, Dallas, Phoenix, and roughly 200 others) charge $50 to $400 per unverified police dispatch on repeat offenders, and many require Enhanced Call Verification (ECV) or Verified Response before dispatch at all. Traditional panel monitoring fails ECV by definition because the central station only has the zone label and a phone tree. A pre-verified video alarm ships with the thumbnail that shows the actual person in the actual zone at the actual timestamp, which is precisely what Verified Response ordinances (Salt Lake City, Seattle, Las Vegas precedent) require. The dispatch is either preempted by the thumbnail itself or satisfied by it.

How does this relate to the recorder already in my office closet?

Cyrano does not replace the DVR or NVR. It plugs into the HDMI output of whichever recorder is already there, passes the signal through to the wall monitor so the guard sees the same multiview, and captures frames from the passthrough for inference. The overlay_mask template library already covers Hikvision DS-7xxx, Dahua XVR and NVR, Lorex, Amcrest, Reolink NVR, Uniview, Swann, Night Owl, Q-See, ANNKE, EZVIZ, Bosch DIVAR, Honeywell Performance, and Panasonic WJ-NX. Recorder brand does not matter as long as it puts a multiview on HDMI-out, which all of them do.

Do I still get 24/7 monitoring if I do not use a central station?

Yes, but the 24/7 role is monitoring the event stream, not the raw video. The Cyrano unit runs inference around the clock on-device. Any event that passes all four filter stages lands in the operator inbox with its thumbnail and recorder deep link. You can route that inbox to your own staff, to a white-label alarm response vendor, or to a guard service. The crucial difference is that the human is not triaging unverified signals; they are triaging already-classified events. One person can reliably cover 20 to 50 properties this way because the per-property alert volume collapses.

What is the exact schema that lands in the operator inbox?

Nine fields plus a thumbnail. tile.label (camera name the DVR stamps on the strip, e.g. 'Loading Dock NE'), tile.index (row-major position in the grid), tile.coords (x,y,w,h in composite-frame pixels), property (site ID), layout_id (recorder layout, e.g. '4x4-std'), overlay_mask (array of overlay classes blanked, e.g. ['clock','cam_name_strip','channel_bug']), event_class (person_in_zone / vehicle_dwell / loiter / tamper), iso8601_ts (recorder clock timestamp), latency_ms (capture-to-delivery time). The thumbnail is a 480x270 JPEG crop of just the triggering tile, stored at an S3 key the event references.

What happens during an internet outage? Does the monitoring fail?

Detection keeps running. Events keep getting generated, filtered, and written to a local queue on the Cyrano device. Thumbnails are generated locally. When the link comes back up, the queue drains to the cloud in timestamp order and the operator dashboard backfills. A traditional panel calling a central station over cellular fails when the cell link fails; a cloud camera with a subscription fails when the upstream fails. The HDMI edge-tap path is offline-durable because the AI decision and the thumbnail both happen before the network ever enters the picture.

How does this compare on cost to a central station contract?

A central station plan for a small commercial property runs $15 to $50 per month, and video add-ons (Alarm.com, Verisure, cloud cameras) typically add $10 to $25 per camera per month. A 16-camera property easily hits $250+ per month with dispatch fees layered on top. The HDMI edge-tap is $450 one-time for the device and $200 per month for the property, independent of camera count up to 25. At 50 properties the monthly cost is $10,000 flat versus anywhere from $12,000 to $30,000 for the central-station-plus-video-addon stack.

Does this replace or add to a panel alarm system?

Neither, in the strict sense. The panel (door contacts, motion PIRs, glass break) still does what it does and still reaches whichever central station you already pay. The HDMI edge-tap operates in parallel on the camera side, emitting pre-verified video alarms into your operator inbox. Many customers eventually drop the panel contract once they realize the video alarms are more actionable and cheaper, but nothing forces that. They run side-by-side until you are ready.

What response options do I have when a pre-verified alarm lands?

Five common routes: (1) notify the on-site guard with the thumbnail and recorder deep link; (2) route the event to a white-label monitoring vendor with video response; (3) call the tenant or property manager through an auto-dialer with the thumbnail link via SMS; (4) submit the event thumbnail as ECV evidence to local PD where Verified Response is required; (5) escalate to an armed-response dispatch service where the ordinance allows. All five are configurable per event_class and per property so LOW-threat events (delivery person at noon) and HIGH-threat events (masked person at 2am) follow different response paths.

How is this different from Verkada or Eagle Eye monitoring?

Verkada and Eagle Eye are cloud VMS platforms that push continuous video from the camera or recorder to a vendor bucket and run analytics in their cloud. The property still pays the upstream bandwidth cost, the raw footage still lives on a vendor server, and the 'alarm' is still a post-hoc annotation on stored video. Cyrano's HDMI edge-tap runs inference on-device before anything leaves the building. The alarm is emitted at classification time, with the thumbnail generated locally, and nothing about the raw video is uploaded. The posture is fundamentally different on privacy, bandwidth, and latency.

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