Smart Sensors

Best WiFi Door Sensor

Planning to buy a smart wifi door sensor?

There are quite a few options in 2020 but which one outweighs the features you need. The smart sensors are little gems that make your smart home secure and safe.

All the wifi sensors we are listing can be used on windows and doors. They are easy to install and are compatible with Alexa.

Smart Wifi Window & Door Sensors that Works with Alexa

SmartThings by Samsung is a known name in smart home devices. The Wifi sensor provides great value and reliability. It is multipurpose and is not limited to sending notification of door open/close.

The usage of the sensor is limited to your imagination. It can be put on cabinets, drawers, windows, doors, etc. It works on the ZigBee protocol.

It can alert you on a change in temperature. All you need to do is set up automation or routines in your SmartThings app or Alexa app. Being a multipurpose sensor, it is also sensitive to tilt and vibrations. In all these scenarios it sends an alert to your app.

The SmartThings sensor supports IFTTT but the important consideration above all is that you need SmartThings hub to connect everything including Alexa and other smart home devices.

SmartThings smart sensor is good option looking at the versatile usage. It is very well priced, small in size and weight. You won’t face connectivity issues if they are in close range of the hub.

New Ring Alarm Contact Sensor 

Amazon has introduced its second-generation Ring Alarm contact sensor for windows and doors. It works on the Z-Wave protocol and is super easy to install.

The Ring sensor can be mounted on any window or door frame. It connects with the Ring Alarm Base Station and sends alerts to Ring app when you open or close the door.

Additionally, it also activates your alarm if someone tries to tamper with the sensors.

The sensor runs on 2 CR2032 Coin cell batteries and can last easily for more than 2 years. It has a 1-year warranty and a must-have if you are already invested in Ring Alarm System.

One of the smallest sensors that can be placed anywhere. The only con is that it requires the Ring Alarm Base Station.

Sengled Smart Window & Door Sensor

Sengled is one of the most competitively priced smart wifi sensor. It is sold in the pack of two. Sengled works on the ZigBee protocol and requires any ZigBee compatible hub. It works with Alexa and Google Assistant.

 The SmartThings compatible smart contact sensor helps you automate lights depending upon if the door or window is open/close.

The Sengled Home app is intuitive and easy to use. Within 3 minutes we were able to set up the sensor and pair it with Alexa.

The sensor is relatively small and does not catch the attention easily. It comes with a 2-year warranty which is one year extra than the competition. It uses lithium-ion batteries that are already included in the pack.

You can easily check the status of the door/window anytime and from anywhere. Lastly, the installation is as easy as peeling the adhesive cover and stick it on the door or window frame.

Ecolink Wifi Door & Window Sensor

Ecolink Door/Window Sensor (DWZWAVE2.5-ECO) is a reliable option if you already own a Z Wave Plus hub. It works on the Z Wave Plus protocol and is works with a variety of hubs like SmartThings, HomeSeer, and many Vera models.

It is compatible with Alexa and can be controlled by voice if paired with Alexa device and hub. 

Ecolink comprises of two parts: the magnet and sensor. The sensor goes and sticks to the window/door and magnet on the frame. It comes with two casings: white and brown to match the room aesthetics. 

The magnetic field breaks when the door is opened resulting in triggering the alert. It is also sensitive to tampering and sends alert whenever someone tried to tamper.

Ecolink sensors work on lithium batteries and can easily last more than 2 years. It is built with rare earth magnets and can detect gaps up to 5/8th inch. 

If you are looking for a Z Wave option to automate lights using the contact sensor, Ecolink Sensor is your bet. It can be used to turn on/off lights, adjust the thermostat, send notification and alarm when the door closes or opens.

It comes with a 1-year warranty. The chunky size and design is the only con that can bother you.

Things to Consider Before Buying a WiFi Door Sensor

Smart Features

The true smart sensor integrates with other smart home devices. Buy a sensor that sends alert to your mobile and can be controlled from anywhere. Some other useful smart automation features like switching on/off light when you open or close the door.

It should be compatible with smart assistants like Alexa, Google Assistant etc. 

Ease of Installation & Use

Most of the customers prefer contact sensors that are easy to install or DIY install. Most sensors are adhesive based and can be stick easily on the door or window frame.

The smart sensor should be easily installable and work on other options like cabinets, drawers, safes etc.

Battery Life

The sensor tends to consume lot of battery but lately the newer model are frugal in power consumption. Choose new generation smart wifi sensor with good battery life. Changing batteries every 6 months can be a pain.


In our reviews and survey over a while, we noticed lot of smart sensors missed sending alerts as they intermittently lost connection with the hub. The poor wifi range is generally the issue and may require wifi extenders in some sensors.

Types of window and door sensors

There are three basic types of window and door sensors and one specialized type of sensor. Understanding the type of sensor will help you choose the best wifi door sensor for your needs.

Surface-mounted Sensor

Surface mounted sensors are most common and affordable options for door and windows. These includes magnets which forms the core component of the sensor.

Recessed Sensor

As the name suggests, these are fixed into the surface of the door or windows. They are quite accurate as a sensor and are not as visible as other types of sensors. Installation is bit tedious and requires expertise.

Vanishing Sensor

These are the minimal and thin in design. Vanishing sensors are best option if you are looking for a sensor that just blends with the surface and is not easily visible.

Vented Window Sensor

Vented window sensor includes two magnets and allow the window to be open to some extent without triggering the alert. But if the window is opened further it will set the alarm ringing.

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