Know the Moment Your Rental Property Needs You
WiFi temperature and humidity monitoring with instant text and email alerts — built for landlords who can’t be everywhere at once.
The Problem Every Landlord Knows
You own a rental property across town — or across the state. When it’s 10°F outside and your tenant’s heat goes out, you hear about it hours later. By then, the pipes have frozen. The repair bill is $4,000. The tenant is furious.
Or maybe you manage a vacant property between tenants. Nobody is there to notice the sump pump failed, the humidity crept past 80%, or the furnace stopped running. You find out when the damage is already done.
Watchman changes that.
Always Know What’s Happening at Your Property
Watchman is a compact WiFi sensor that monitors temperature, humidity, and more — and sends you an alert the moment conditions go outside your set thresholds. No hub required. No electrician needed. Plugs into any standard outlet.
Freeze alerts before pipes burst
Set a minimum temperature threshold (say, 50°F). The moment your property drops below it, you get a text. You call the tenant, the HVAC company, or a neighbor — before the pipes freeze.
Humidity alerts before mold takes hold
High humidity is a silent property killer. Watchman tracks it in real time and alerts you before you’re looking at a mold remediation bill.
Monitor multiple properties from one account
Managing more than one unit? Add multiple Watchman sensors under a single account. Check every property in seconds from the app.
Access logs from anywhere
View temperature and humidity history for any sensor at any time — from your phone, tablet, or computer. Useful when a tenant claims conditions were unsafe.
Email alerts included free. Text alerts with subscription.
Basic email alerts come standard at no cost. Upgrade to text alerts and advanced features (outage detection, 15-minute logging, daily snapshots) for $2.49/month — or pay once with our lifetime BuyOut option for $49.99.
How It Works
Step 1 — Plug it in.
Watchman connects to your existing WiFi in minutes. No electrician, no hub, no complicated setup. Works on any standard 2.4GHz network.
Step 2 — Set your thresholds.
Tell Watchman what normal looks like. Below 50°F? Above 80% humidity? You decide what triggers an alert.
Step 3 — Go about your life.
Watchman monitors around the clock. If something changes, you’ll know — by text or email — before it becomes a crisis.
What Landlords Are Saying
“The Watchman has been a life saver for me as a landlord. No more late nights driving through our rental properties trying to read thermometers. The Watchman unit checks frequently and consistently, and sends a text alert to my phone the instant the temperature drops below the threshold of my choosing.”
— Mannox, verified customer
What Can Watchman Monitor?
Watchman sensors are available for a range of conditions — one unit or several, depending on your needs:
- Temperature — freeze alerts, heat alerts, HVAC failure detection
- Humidity — mold risk, moisture damage prevention
- Water / Leak — detect water under appliances, near water heaters, in basements
- Gas — carbon monoxide and other gas detection
- Noise — detect unusual activity in vacant properties
All sensors report to the same portal and app.
Pricing That Works for Landlords
| Plan | Cost | Best for |
|---|---|---|
| Basic (email alerts only) | Free | Landlords who check email regularly |
| Monthly subscription | $2.49/month per unit | Most landlords |
| Annual subscription | $19.99/year per unit | Best value for long-term use |
| BuyOut (lifetime) | $49.99 one-time per unit | Set it and forget it |
Additional text alert numbers: $1.50/month each. Most landlords set alerts to go to themselves and one trusted contact.
Built for Properties Like Yours
Watchman is used by landlords, property managers, and real estate investors to protect:
- Single-family rental homes
- Multi-unit apartment buildings
- Vacation rental properties (Airbnb / VRBO)
- Vacant properties between tenants
- Seasonal and remote properties
- Storage units and garages
Frequently Asked Questions
Does Watchman work if the power goes out?
Watchman requires power to operate. However, our outage detection feature (available with subscription) will notify you if a unit goes offline — which itself can signal a power outage at your property.
Does it need a hub or special router?
No hub required. Watchman connects directly to your existing 2.4GHz WiFi. We also offer a plug-and-play gateway option ($20) if your router is far from where you want to place the sensor.
Can I monitor multiple properties?
Yes. All your Watchman units — across as many properties as you own — are managed from one account. No separate logins.
What if my rental property doesn’t have WiFi?
We offer a 4G LTE modem option for properties without internet service. Contact us for details.
Is there a contract?
No. Monthly subscriptions can be cancelled anytime. Or choose the one-time BuyOut for lifetime access.
Final CTA
Stop finding out too late.
One frozen pipe costs more than five years of Watchman subscriptions. For less than a cup of coffee a month, you’ll always know what’s happening at your property — before it becomes an emergency.