Property	Status	Systems	Propane	Next Booking
Lakeside Retreat Lake Tahoe, CA	DEFCON 5	9/9 OK	78%	In 3 days	View →
Coastal Dunes Villa Outer Banks, NC	DEFCON 5	9/9 OK	65%	Occupied	View →
Pine Ridge Cabin Broken Bow, OK	DEFCON 2	8/9 — Pump offline	31%	Vacant	View →
Desert Sky Casita Scottsdale, AZ	DEFCON 5	9/9 OK	92%	In 1 day	View →
Summit View Lodge Gatlinburg, TN	DEFCON 3	9/9 — Freeze watch	42%	Vacant	View →

Properties Online

47/50

3 offline • auto-reconnecting

Active Alerts

1 pump offline • 1 freeze watch

Propane Runway (Avg)

4.2 days

Lowest: Pine Ridge • 31%

Next Booking

Check-ins within 7 days

450 systems across 50 properties

Live — Polling every 5 min Portfolio Overview

Manage 50 properties.
One screen.

STR Sentinel monitors 9 critical systems at every property in your portfolio. Freeze protection, leak detection, guest access, propane tracking — with automatic intervention when things go wrong, even when you're 500 miles away.

Start Monitoring → See All Systems

True story — February 2024

A $15,000 lesson in what happens when no one's watching

A luxury vacation rental. February. Guests had just checked out. The property sat vacant. Outside, temperatures dropped to 18 degrees Fahrenheit.

The pool and spa system had freeze protection built in — it was supposed to circulate water through the pipes whenever temps dropped below freezing. Standard equipment. Should have worked.

But beneath the deck, there was a logic fault in the pool controller. A spa pump timer — set for guest convenience — was inadvertently overriding the freeze protection system. The timer would kill the spa pump after 45 minutes, even while freeze protection was actively calling for circulation.

Outside air 18°F Stagnant water in pipes

Water sat stagnant in the spa pipes for hours at 18°F. Three pipe joints cracked. When the ice thawed, water poured into the equipment area.

$15,000 in damage. No alert was ever sent. The property manager didn't know until the next guest arrived and found the mess.

STR Sentinel was born from this exact failure.
We built the system we wished existed.

Alert Framework

Five-level threat response

From routine monitoring to emergency intervention. Every alert level has a defined escalation path and automatic actions.

DEFCON 5

Normal

All systems nominal. Air temp above 45°F. Routine polling.

Action: Log only

DEFCON 4

Watch

Forecast low tonight drops below 42°F. Freeze protection on standby.

Action: 4 PM text alert

DEFCON 3

Advisory

Air below 42°F and dropping. Freeze protection expected to activate.

Action: Text owner + PM

DEFCON 2

Warning

Freeze ON but pump offline, or HVAC down during freeze event.

Action: Auto-restart + alert

DEFCON 1

Emergency

Pump failure confirmed by flow sensor, or water leak detected. Sub-freezing.

Action: Auto-shutoff + call

Before & After

What changes with STR Sentinel

Common STR disasters happen every day. Here's how Sentinel transforms reactive scrambling into proactive protection.

Scenario	Without STR Sentinel	With STR Sentinel
❄️ Pipes freeze overnight	You find out when a guest calls about no water. Emergency plumber: $3,000+. Guest refund. Bad review.	Sentinel monitors pump operation AND flow. If pump is killed by a timer override, Sentinel restarts it via API within minutes and confirms water is circulating. Texts property manager with status.
⛽ Propane runs out	Guest wakes up cold. No hot water. No heat. Delivery takes 2 days in winter. Terrible review.	Sentinel tracks burn rate and forecasts depletion. Alerts property manager days ahead. Auto-sheds non-essential loads when supply is low. You schedule delivery before it becomes an emergency.
🌡️ HVAC fails while vacant	Nobody notices until the next guest arrives. Indoor pipes may have already frozen. Catastrophic damage.	Sentinel detects indoor temp dropping via Ecobee. Can't restart HVAC remotely, so it shuts off the water main via Moen Flo to prevent pipe burst. Alerts property manager and HVAC company.
🔐 Guest locked out	Guest calls at 11 PM. You fumble for master code. Drive out or call locksmith.	Schlage battery monitored continuously. Alerts before battery dies. Unique codes generated per booking. Remote code generation available. Full audit trail logged.
💧 Water leak detected	Slow leak goes unnoticed for days. Subfloor damage, mold risk. Insurance claim.	Moen Flo detects anomalous flow. Auto-shutoff on catastrophic leak. Texts property manager immediately. Damage contained to minutes, not days.
⚡ Power outage	Generator maybe starts. Maybe doesn't. You find out when guest complains or pipes freeze.	Generator auto-transfer monitored. Propane runway calculated in real-time. Load shedding activates if fuel is limited. Morning summary sent to property manager.

Automated Response

When the Storm Hits

An ice storm warning drops for your region. Here's what STR Sentinel does automatically — before you even check your phone.

T-5 Days — Weather Intelligence

Early Warning & Propane Forecast

Sentinel detects incoming ice storm. Tank at 42%. At current burn rate plus storm duration, propane won't last. DEFCON 2 alert to property manager: "Ice storm forecast Thursday. Propane at 42%. Recommend emergency top-off before roads deteriorate." Property manager calls propane company, gets delivery Tuesday.

Propane Weather

T-6 Hours — Storm Approaching

Pre-Storm Verification

All systems verified online. HVAC set points confirmed. Pool and spa pumps confirmed running. Generator in standby. Water main pressure normal. Everything green across the board.

All Systems Generator

T+0 — Power Goes Out

Generator Auto-Transfer

Power goes out. Generator auto-transfers in 12 seconds. Sentinel confirms transfer, texts property manager: "Power out. Generator running. Propane at 78%. Estimated runway: 72 hours."

Generator Electrical

T+2 Hours — Freeze Protection Active

Pump Circulation Confirmed

Freeze protection activates. Sentinel monitors pool AND spa pumps — both running, confirmed by flow data. No timer override this time. Water is circulating. Pipes are safe.

Pool/Spa Water

T+8 Hours — Storm Passes

All-Clear & Morning Summary

Power restored. Generator returns to standby. All systems nominal. Morning summary sent to property manager: runtime logged, propane consumed, zero damage, zero intervention needed.

All Systems

Return on Investment

How It Saves You Money

Real numbers from real properties. STR Sentinel pays for itself after preventing a single incident.

$15K+

Freeze Damage Prevented

Burst pipes in a rental property average $15,000 in repairs and months of lost bookings. Pump monitoring and auto-shutoff stop it before it starts.

$2K/yr

Propane Optimization

Load-shedding logic and burn-rate analysis cut propane waste. Smart scheduling heats the spa only when guests arrive, not around the clock.

15-20%

Insurance Discount Potential

Water shutoff systems and generator monitoring can qualify your property for significant insurance premium reductions. Some carriers offer smart-home discounts.

Auto-Intervention

It fixes things before you wake up

When sensors detect a problem, Sentinel acts automatically. No phone call needed. No midnight drive to the property.

Pump Failure

Restart circulation pump during freeze

If freeze protection is active but the pump drops offline — killed by a timer override or fault — Sentinel restarts it via API within minutes and confirms water is circulating with flow sensors.

0 minPump dropout detected via flow data

+2 minAPI restart command sent to iAqualink

+3 minFlow sensor confirms water circulating

+5 minProperty manager notified via text

Water Leak / HVAC Failure

Shut off water main to prevent pipe burst

Moen Flo detects abnormal flow or catastrophic leak — auto-shutoff activates. Or: HVAC fault causes indoor temps to drop dangerously while property is vacant. Sentinel detects indoor temp falling via Ecobee, can't restart HVAC remotely, so it shuts off the water main via Moen Flo to prevent pipe burst if indoor pipes freeze.

0 minLeak detected OR indoor temp dropping

+30 secWater main valve closed via Moen Flo

+1 minDEFCON 1 alert: text PM + HVAC company

+5 minFollow-up: confirm shutoff holding

Generator Running / Low Propane

Propane load shedding

When generator is running during outage and propane is limited, Sentinel automatically sheds non-essential consumers — spa heater first, then pool heater — to preserve fuel for generator and HVAC. Texts property manager with estimated runway.

0 minGenerator running + propane below threshold

+1 minSpa heater shed, pool heater shed

+2 minPM texted: "Propane at 28%. Load shedding active. Estimated runway: 48 hrs."

OngoingRunway recalculated every 15 minutes

Manage 50 properties.
One screen.

A $15,000 lesson in what happens when no one's watching

Five-level threat response

Nine systems. Total coverage.

What changes with STR Sentinel

When the Storm Hits

Early Warning & Propane Forecast

Pre-Storm Verification

Generator Auto-Transfer

Pump Circulation Confirmed

All-Clear & Morning Summary

How It Saves You Money

It fixes things before you wake up

Built on the devices you already own

Stop reacting. Start protecting.

Manage 50 properties.One screen.

A $15,000 lesson in what happens when no one's watching

Five-level threat response

Nine systems. Total coverage.

What changes with STR Sentinel

When the Storm Hits

Early Warning & Propane Forecast

Pre-Storm Verification

Generator Auto-Transfer

Pump Circulation Confirmed

All-Clear & Morning Summary

How It Saves You Money

It fixes things before you wake up

Built on the devices you already own

Stop reacting. Start protecting.

Manage 50 properties.
One screen.