Door & Window Sensors · Head to head

Aeotec Multipurpose Sensor vs SwitchBot Contact Sensor

Full Smart Door & Window Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Aeotec and SwitchBot sites.
2026 verdict
Casement windows with a fussy gap still leave the SwitchBot Contact Sensor as the recommendation over the Aeotec Multipurpose Sensor.
SwitchBot Contact Sensor
Winner
SwitchBot Contact Sensor
$16.99
Buy on Amazon USA
It is the more affordable, adds motion and light to contact, rates two AAA cells for 3 years, and opens Alexa, Google Home, SmartThings, Apple Home and Matter through a SwitchBot hub, with Home Assistant direct. Owner response favors the Aeotec Multipurpose Sensor on awkward alignment, and it adds temperature with temperature alerts on a CR2450 rated for 1 year. SmartThings, Alexa, Google Home and Home Assistant are supported. Apple Home and Matter are not, and it needs a Zigbee hub. Neither is weather resistant. Use the SwitchBot Contact Sensor when the casement should also see motion. Use the Aeotec Multipurpose Sensor when the magnet cannot sit close and you already run Zigbee.
vs
Winner
SwitchBot Contact Sensor
SwitchBot

SwitchBot Contact Sensor

Prime exclusive deal
$16.99
Buy on Amazon USA

Also sold in packs

  • Pack of 3$35.99$12.00 per unitYou save $14.98Buy
News by email

Still comparing? Get what's new by email

New releases and the smart home news worth knowing, in your inbox.

Smart home news and new releases, straight to your inbox

New releases, comparisons and the smart home news worth knowing.

No spam. Unsubscribe in one click.

Your subscription could not be saved. Please try again.
Please enter a valid email address.
Tick the box above to finish signing up.
We couldn't verify you're human. Please try again.
Too many attempts. Please try again in an hour.
Your subscription has been successful.
FeatureAeotec Multipurpose SensorSwitchBot Contact SensorWinner
Price$37.99$16.99SwitchBot Contact Sensor
Rating4.54.4Aeotec Multipurpose Sensor
Battery Life1 year3 yearsSwitchBot Contact Sensor
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterSwitchBot Contact Sensor
SensorsDoor & Window Open/Close, TemperatureDoor & Window Open/Close, Light, MotionSwitchBot Contact Sensor
Weather ResistanceNONOTie
ConnectivityZigbeeBluetoothTie
AlertsDoor & Window Open/Close Alerts, Temperature AlertsDoor & Window Open/Close Alerts, Motion AlertsTie

What the differences mean

Gap versus extra sensors

The Aeotec Multipurpose Sensor is the one owners trust on wide, misaligned or right-angle gaps, and the spec sheet adds temperature plus temperature alerts. A minimum detection distance is not published, so the gap skill stays a owner report, not a millimeter claim. The SwitchBot Contact Sensor publishes no such gap story. It publishes motion and light instead.

Battery

The SwitchBot Contact Sensor is rated for 3 years on two AAA cells. The Aeotec Multipurpose Sensor is rated for 1 year on a CR2450, and owners often say real life is shorter when vibration reporting is busy. On a casement you do not want to open the case often, the SwitchBot figure is the longer one.

Radio

The Aeotec Multipurpose Sensor needs a Zigbee hub. The SwitchBot Contact Sensor uses Bluetooth and needs a SwitchBot hub for voice assistants and Matter, not for Home Assistant. A casement in a Zigbee house can use the Aeotec without a SwitchBot account. A SwitchBot house does not need a Zigbee stick.

Platforms

Both support Alexa, Google Home and Home Assistant. The Aeotec Multipurpose Sensor also supports SmartThings directly, and not Apple Home or Matter. The SwitchBot Contact Sensor supports SmartThings, Apple Home and Matter only with its hub. Temperature alerts exist only on the Aeotec.

Which one to buy if

What owners say

Owners of the SwitchBot Contact Sensor highlight an easy stick-on install, quick door alerts, and motion plus light that make one sensor do extra jobs, with the repeated caveat that a hub is required before Alexa or remote alerts appear. Owners of the Aeotec Multipurpose Sensor talk about doors and windows where other magnets fail: wide gaps, right angles, screens and casements that still read closed. They also use temperature and vibration, for an attic or a dryer finishing. The complaint is the CR2450, which many say dies quickly, plus a SmartThings layout that splits contact and temperature into two devices.

Frequently Asked Questions

Which is the better casement sensor, the Aeotec Multipurpose Sensor or the SwitchBot Contact Sensor?

The SwitchBot Contact Sensor is the overall recommendation: more affordable, motion and light as well as contact, and 3 years on two AAA cells. Owner response favors the Aeotec Multipurpose Sensor when the magnet gap is awkward and you want temperature on Zigbee.

What is the biggest practical difference?

The Aeotec Multipurpose Sensor is a Zigbee contact and temperature sensor that owners use across wide or crooked gaps, on a CR2450 rated for 1 year. The SwitchBot Contact Sensor adds motion and light, uses Bluetooth, and needs a SwitchBot hub before Alexa or Matter will see it. Home Assistant is direct.

Does the Aeotec Multipurpose Sensor support Apple Home?

No. Apple Home and Matter are not supported. Alexa, Google Home, SmartThings and Home Assistant are. The SwitchBot Contact Sensor lists Apple Home and Matter with a SwitchBot hub, along with Alexa, Google Home and SmartThings.

Which battery is rated longer?

The SwitchBot Contact Sensor, at 3 years on two AAA cells, against 1 year on a CR2450 for the Aeotec Multipurpose Sensor. Owners of the Aeotec often report even shorter life. Neither sensor is weather resistant.

Who should buy the Aeotec Multipurpose Sensor anyway?

Someone on SmartThings, Hubitat or Home Assistant with Zigbee who needs temperature and a sensor that still reads closed when the two halves cannot line up. Buy the SwitchBot Contact Sensor for motion, light and the longer published battery life.

Full comparison table

Compare all 32 Door & Window Sensors side by side

You are looking at two of them. The full table lines up all Door & Window Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 32 Door & Window Sensors
  • 40 specs compared
  • 35 filters
Open the full comparison
More Door & Window Sensors

Top Door & Window Sensors to compare next

32 door and window sensors from 18 brands compared: Aqara, Aeotec, Sonoff, Fibaro and more. Zigbee, Z-Wave and Wi-Fi options, battery life and size.

All Door & Window Sensors
Aeotec

More Aeotec products

A sharper look at other Aeotec products worth comparing.

Explore Aeotec
SwitchBot

More SwitchBot products

A sharper look at other SwitchBot products worth comparing.

Explore SwitchBot
Independent · Not sponsoredBrands never pay for placement or rankings. Affiliate commissions never influence our comparisons.

As an Amazon Associate I earn from qualifying purchases.

CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED ‘AS IS’ AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.

© 2026 Smart Home Compared
Search