Do Awning Wind Sensors Work? What Wind and Sun Sensors Do (and Do Not) Protect on Connecticut Awnings

By Shoreline Shade, LLC, Clinton, Connecticut · Last updated October 2026

What do wind and sun sensors do on a motorized awning?

A motorized awning or retractable screen moves when you press a button. A sensor lets it move without you. There are two kinds that matter to homeowners, and they do opposite jobs.

A wind sensor is a safety device. When it detects motion or wind speed above the level it was set to, it sends a retract command to the motor. The point is to close the awning before a gust can load the arms and fabric. A sun sensor is a comfort device. It measures how bright it is and extends the shade when the sun comes out, then retracts it when the light drops. Many setups combine both, with wind always taking priority over sun.

Shoreline Shade installs SunPro awnings and screens and Mirage door screens. On our awnings page, the wind sensor is described as an optional upgrade that automatically retracts the awning when wind speeds exceed safe levels, and some models also support timers and smartphone control. On our motorized screens page, wind and sun sensors are listed as available options. Which sensors fit depends on the model, so the exact part is chosen at the estimate.

How does an awning wind sensor actually work?

There is no single design, but most residential wind sensors fall into one of two families. The details vary by brand and model, so treat this as a map rather than a specification.

Whichever type is used, the sensor does not move the awning directly. It sends a wireless or wired signal to the motor, and the motor retracts. The installer sets how sensitive the sensor is. Set too high and it stays quiet while a real gust loads the awning. Set too low and it retracts on a breezy day when you wanted the shade.

Most systems also add a short delay. After the wind drops, the awning does not instantly unroll again. It waits for conditions to stay calm for a while, so it does not open and close all afternoon. Our local winds are variable, so this delay is a feature rather than a nuisance.

How does a sun sensor work, and is it worth having?

A sun sensor is a light sensor, usually a small photocell in a weatherproof housing. When the sun is bright enough to cross the threshold you set, it sends an extend command. When the light drops below the threshold, for a minute or more, it sends a retract command. Cloud cover and tree shadows count as less light, so the awning may move on a day with broken cloud. The better systems wait before reacting so it does not cycle with every passing cloud.

The honest case for a sun sensor is simple. It makes shade happen when nobody is home. If your living room bakes from noon to four, an awning that opens by itself keeps the glass and the furniture out of direct sun. That is useful for the people in the house and for anything that fades. Our guide to exterior shades and UV protection covers the fading side.

The case against a sun sensor is also simple. Not everyone wants the awning out every time the sun appears. Some owners prefer to open the awning for dinner and leave it closed otherwise, and a sun sensor works against that habit. If you want shade only when you are home, use the remote and keep the wind sensor for safety. Many homeowners end up with the sun function as a seasonal setting: on for the hot months, off the rest of the year.

Sun sensors work for screens and exterior solar shades too. On a shaded porch, a light-controlled solar shade can lower in the afternoon to cut glare and heat, then lift in the evening. Read more in our guide to choosing exterior solar shades. For the wider energy picture, a 2013 report prepared for the U.S. Department of Energy by Lawrence Berkeley National Laboratory, Energy Savings from Window Attachments, covers awnings, solar screens and other attachments in detail.

What wind speeds are we really talking about?

Homeowners often ask what speed a sensor should be set to. There is no honest single number, because the right threshold depends on the awning model, its projection, how it is mounted, and how exposed the site is. What we can do is give a feel for the wind itself. The National Weather Service describes the Beaufort wind scale in terms of what you can see and feel on land.

These are general weather-service descriptions, not Shoreline Shade ratings. The wind a specific awning can handle is a manufacturer rating that varies by model, size and mounting, and we will tell you what the one you are considering is rated for. Ask for it in writing at the estimate rather than guessing.

What sensors protect you from

Used properly, sensors protect against the ordinary risks of owning a motorized awning in New England.

• The forgotten awning. Most awning damage is not a hurricane. It is an awning left out on a day that turned breezy while nobody was watching. A wind sensor covers that gap.
• Afternoon gust fronts. Warm days along the shore often end with a sea breeze or a passing front. A sensor reacts faster than you can get to the remote.
• Running errands. A good setup closes the awning while you are at work, shopping or away for a weekend.
• Sun damage inside. A sun sensor can keep direct light off flooring and furniture during the hours you are not home.
• Wear on the fabric and arms. Fewer hard gust loads is gentler on the hardware over the years.

Coastal homes benefit more than most, since shoreline sites see stronger and more changeable wind. Our guide to salt air and coastal awnings covers the other coastal factor, and the windbreak screens guide explains how wind actually moves around a patio.

What a sensor cannot do

This is the part most sales brochures skip, so we will be direct.

• It cannot beat a sudden gust. The motor needs time to roll the awning in. A very fast gust can arrive before the awning is closed. Sensors reduce risk. They do not remove it.
• It does not work without power or signal. If the motor has no power, a battery in the sensor is dead, or the wireless link has dropped, nothing retracts. Ask what happens in a power outage and whether the awning has a manual override. That varies by model.
• It is not a storm plan. In a named storm, a nor’easter or a hurricane watch, retract by hand and leave it retracted. See our [[/storm-prep-awnings-screens-connecticut/|storm prep guide]].
• It does not watch rain, ice or snow load. Wind sensors respond to wind. A retractable awning is not meant to carry snow, and a sensor will not know about it. If snow or ice is forecast, retract it yourself. Our [[/winterize-retractable-awning-connecticut/|winterizing checklist]] explains the fall routine.
• It can get fooled. A vibration sensor can react to a nearby vibration, such as a loose bracket. A sun sensor can be shaded by a tree or fooled by a security light. Placement and tuning matter.
• It does not read your mind. If you want the awning open on a windy but sunny day, you will find it closed. That is the point of the device, but it surprises some owners.

Where the sensor is mounted matters more than the sensor

The same part can work well or poorly depending on where it is mounted. A sun sensor needs an open view of the sky, and ideally the same exposure as the area being shaded. A sensor tucked under the eave or behind a gutter downspout sees less light than the patio does, and will extend the awning late and retract it early.

A wind sensor needs to feel the real wind. A sensor mounted on the lee side of a chimney, a corner or a hedge can read calm when the open side of the awning is catching the gust. On a point of land, on a hill, or beside open water, the wind at the awning is often stronger than the wind in the yard, so we place and test with that in mind.

Power is another factor. Some sensors are wired into the system. Some are wireless and run on a battery. Wireless units mean a periodic battery check, which is easy to forget. If you want one fewer thing to remember, ask which type your model uses and how you will know when the battery is low.

Installers also set the sensitivity. It should be tested on site and adjusted after the first few weeks, since the number that sounds right on paper may be wrong for your exposure. If an awning keeps retracting on mild days, or never moves on a day that felt windy, tell your installer and have it re-tuned. Our post on what to expect during installation walks through setup and testing.

Sensors, remotes, timers and smart-home control

Sensors usually sit alongside a handheld remote, an optional wall switch and sometimes a phone app. The remote always works, whether or not the sensors are enabled. Many owners keep the wind sensor active all the time and use the remote for everything else. If you want to connect the awning to a hub, scenes or voice control, see our guide to smart-home awning integration.

One caution: automation can make people complacent. If a timer extends the awning every morning and the wind sensor is off, you have built a machine that opens itself in the worst conditions. Pair every automatic extend setting with a working wind sensor.

When are sensors worth it, and when are they the wrong answer?

We think a wind sensor is worth adding to nearly every motorized awning, because it is a small part of the overall cost compared with the awning itself. It is more valuable if the awning is on an exposed site, the house is often empty during the day, or you have a large projection. See our retractable awning cost guide for how options fit into a quote.

Our town pages for Clinton, Madison and Old Saybrook describe what coastal exposure looks like along the shoreline.

Frequently asked questions