Cottage Freeze and Leak Alerts with LoRaWAN

October 15, 2026

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A frozen pipe or a slow leak at a closed-up cottage can go unnoticed for weeks. LoRaWAN sensors can warn you sooner. They run for long periods on batteries, send small messages over long distances, and on the Helium network they need no contract or SIM card. This guide covers how a cottage alert setup fits together and what to check first.

How it works

A temperature sensor near the pipes, and a leak sensor on the floor under the water heater, pump or sink, send a short message on a schedule or when something changes.
A Helium hotspot in range receives the message and passes it over the internet to your LoRaWAN console.
The console, or an app connected to it, sends you an email or text when the temperature drops below your limit or water is detected.

Our step-by-step guide, how to connect a LoRaWAN sensor to Helium in Canada, covers the console setup. Setting up alerts depends on the console or app you choose, so follow its own instructions.

Step 1: Check coverage at the cottage

Many cottage areas have little public coverage. Look up the address on the Helium IoT network map, and read our map and explorer guide to make sense of it. A hotspot shown on the map isn't proof that a sensor inside your basement will reach it.

Step 2: Bring your own coverage if needed

Your own coverage for your sensors. If the map shows no hotspot near your site, put one there. A hotspot is a LoRaWAN gateway: it listens for your sensors and passes their messages over your internet connection to the Helium network and on to your console. It needs power and an internet connection (Wi-Fi or Ethernet). Good starting points: the SenseCAP M1 bundle with outdoor enclosure and 3 dBi antenna, the SenseCAP M1 bundle with the Nebra 5.8 dBi antenna, the SenseCAP M1 indoor hotspot or the SenseCAP M2 data-only gateway. See all Helium hotspots and LoRaWAN gateways. Hotspot sales are final, as listed on each product.

If the cottage has internet, the hotspot can sit there. If it doesn't, a hotspot on a neighbour's property or a nearby building with internet may still reach your sensors, depending on distance and terrain. An outdoor antenna mounted high helps most.

Getting the antenna outside. A roof or wall antenna usually hears far more than one indoors. A no-adaptor chain we stock: McGill 6 dBi antenna, LMR-400 N-female to N-male cable, Laird lightning surge arrestor, 1 m N-male window pass-through and an L-type wall mounting pole, about CAD $274.95 in total. Our antenna buying guide explains the choices. Browse antennas, cables, antenna accessories and enclosures.

Step 3: Choose the sensors

Look for LoRaWAN sensors sold in a US915 version. Helium's featured products page lists examples it promotes for the home, including a Dragino temperature sensor and a Milesight leak detector. We don't have freeze or leak sensors in stock right now. Ask us using the chat button and we'll tell you what we can get.

From our current stock, the RAK WisNode Button 4K is a four-button LoRaWAN remote you can program, for example as a "we've arrived" or "all checked" button. If you like to build things, the Helium Developer Kit includes a RAK WisBlock temperature and humidity sensor you can program into a simple freeze monitor. See all sensors and kits.

Step 4: Place and test

Put the temperature sensor where pipes are coldest, such as a crawl space or an outside wall, not next to a heater.
Put leak sensors on the floor where water would collect first.
Test each one before you close up: warm or cool the temperature sensor, wet the leak probe, and confirm the alert arrives.
Check battery ratings for cold. Battery life and cold performance vary by model, so check the maker's figures.

What it costs to run

Data on Helium is paid in Data Credits, a pay-as-you-go data cost, not an investment. At MeteoScientific's listed US$0.0001 per DC, a sensor sending one small message an hour uses about 8,760 DC a year, under US$1. Two or three cottage sensors cost a few dollars a year in data. Prices can change, so treat this as an estimate. Your internet service for the hotspot is a separate cost.

FAQ

Will this stop a pipe from freezing?
No. It only warns you. Someone still has to act on the alert.

What if the power or internet goes out?
Battery sensors keep sending, but a hotspot without power or internet can't pass messages on. A long outage at the cottage can also mean missed alerts. Consider how you'd notice that.

Can I use the same hotspot for other sensors?
Yes. One hotspot can serve many sensors in range, including ones for the dock, shed or boat and trailer.