Smart sensors vs cottage visits: partners, not rivals

For not much money, a leak detector sends an alert to your phone. A connected thermometer shows you the living-room temperature from Montréal. It’s fair to wonder whether these gadgets make visits unnecessary. The short answer: they do part of the job well, and not the rest.

How to set up the cottage properly

1. Put sensors where water and cold start

A leak detector only sees the spot it’s sitting on. Useful places: under the water heater, near the incoming water line and main shut-off, under sinks, behind the washer, next to the sump pump. For temperature, a sensor in the coldest room — basement, accessible crawl space, north-side room — tells you more than a thermostat on the main floor.

2. Ask what happens when the power goes out

This is the most important question. During an outage, the Wi-Fi router shuts down, and many sensors can’t send anything. Yet an outage is exactly when the heat stops. Some devices have a backup battery, others a cellular connection. Read the manufacturer’s spec sheet, then test it: unplug the router and see whether an alert comes through.

3. Check batteries before winter

A sensor with a weak battery often stops reporting without a clear warning. Write down when you replaced them, and check in the app when each device last checked in.

4. Decide who answers the alert

An alert at 11 p.m. on a Tuesday in January, while you’re two hours away, raises a simple question: who goes? Write down the person’s name, how they get in and what they should do. An alert with nobody to act on it just keeps you up at night.

Why sensors and visits don’t see the same things

What sensors do well:

• React fast, at any hour, to what they measure: water on the floor in one spot, a dropping temperature, a power loss if the device can detect it.
• Show a trend between visits, like a room slowly cooling.
• Reassure you between stays, when everything works.

What they don’t see:

• A leak running next to the sensor, inside a wall or through an upstairs ceiling.
• An ice dam forming at the eaves, a deck overloaded with snow, a buried exhaust vent.
• Mouse droppings in the cupboards, a chewed wire, a musty smell.
• A notice from Hydro-Québec or the municipality left at the door.
• A driveway that hasn’t been cleared, which would stop a propane delivery or a contractor from getting up.

Townships realities. In the wooded parts of Sutton, Potton or Brome Lake, cell signal can be weak and internet often runs on a single line. Outages on the mountain can last longer on an isolated back road. Cottages that were added onto have corners nobody thought to cover. A sensor is excellent where it sits, and silent everywhere else.

False alarms happen too. Condensation under a cold pipe, a sensor that got moved, a lost connection mistaken for an outage: every alert deserves a check, and a check takes someone on site.

Combining both: what you can do, and what belongs to the pros

What an owner can do:

• Install battery-powered leak detectors at low points, and a temperature sensor in the coldest room.
• Choose devices that also report a lost connection, not only water or cold.
• Every fall, test that an alert gets through with the router unplugged.
• Share alerts with whoever does the visits, if you like, and agree on what they do when one comes in.
• Keep a stand-alone thermometer, with no connection, that can be read on site.

What belongs to a licensed contractor:

• A master electrician: installing a generator, a transfer switch or a dedicated circuit for the router.
• An RBQ-licensed plumber: fitting a motorized shut-off valve that closes the water automatically when a leak is detected.
• An alarm company: a system connected to a monitoring centre that responds day and night.

In an empty house, how long before anyone notices?

With a well-placed, connected sensor, a leak in that spot can be known within minutes. But knowing isn’t acting: someone still has to go shut off the water. And for everything sensors don’t measure — or during an outage that silences them — the house goes quiet again until the next visit.

That’s why we see the two as partners. Sensors shorten the delay for what they measure. Visits cover everything else, confirm or rule out alerts, and leave a photographed record of the state of the house.

What we look at on a visit

Every visit, we read the stand-alone thermometer in the coldest room and confirm the power is on, checking whether the stove and microwave clocks are blinking after an outage. We look at the indicator light and low-battery chirp on the smoke and carbon-monoxide alarms. From the ground we check for ice along the roof edge, and inside we look for droppings along the baseboards and for musty smells. Every finding is photographed and time-stamped.

If something’s off, we call you the same day, with photos. If needed, we meet a licensed contractor on site and document the work.