Roost Smart Leak Detectors have the same approximate range as the Wi-Fi on your smartphone. Grab your smartphone, enable Wi-Fi, and hold your phone near where you want to place your leak detector. If you have above a medium-low Wi-Fi signal on your smartphone, a Roost leak detector should work fine at this location.
After you place your Roost leak detector in its location, you'll be able to see an indication of Wi-Fi signal strength in your Roost app once the device checks in. Please note that the Roost devices check into the Roost cloud once every 24 hours, or 24 hours after an alarm event.
From your home screen in the Roost app, simply tap on the device tile to get to the detail screen where you can see an indication of Wi-Fi signal strength. In the image below, the Roost device has a "medium" Wi-Fi signal strength (yellow).
If your device detail screen shows a red Wi-Fi signal strength, this may indicate that your device will have trouble checking in.