SwitchBot Door Alarm Contact Sensor – Smart Home Security Wireless Window Alarm and Door Sensor, Add SwitchBot Hub Mini to be Compatible with Alexa (1 Pack)
Original price was: £16.99.£12.99Current price is: £12.99.
Price: £16.99 - £12.99
(as of Jun 03, 2025 04:35:48 UTC – Details)
From the brand
At SwitchBot, we don’t just want you to have a smart home, we want you to experience the smart home lifestyle. Through innovative R&D, we drive full-chain growth from production to sales, creating cutting-edge products that set global smart living trends. With a comprehensive loT software, hardware, cloud service system, and Al, SwtichBot can do it all. So, what are you waiting for? Make it simple with SwitchBot.
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Environmental regulation
Sensor
Smart lock
Improvement of air quality
Robot vacuum cleaner
Mechanical control
Smart switch
Home security
[Window & Door Alarm Sensor for Home Security] SwitchBot Contact Sensor can detect the opening/closing of doors and windows, guarding security of the elderly, children, and pets. With the built-in light sensor, it will automatically trigger the Switchbot Bot to turn on the light when someone moves when the environment goes dark. The magnets need to be aligned with the bottom of the body, and the distance between the two components needs to be less than 1.2 inches (30mm).
[Detects People Leaving or Entering the Home] With the built-in motion sensor, Contact Sensor will know whether you are leaving or coming home, making it possible to trigger the different actions you set in the “Scene” in the SwitchBot app. When it detects you leaving home, the appliances will automatically turn off, and when it detects you coming home, the appliances will automatically turn on. (SwitchBot Hub Mini required)
[Easy to Install & Place It Anywhere] Thanks to the small and wireless design with long battery life, you can install Contact Sensor tool-free and get it set up in seconds. Place it on a medicine box to track whether the elderly are taking their medication, or place it on your pet’s cage to know if your kitten has slipped away.
[Part of the SwitchBot Ecosystem] Connect Contact Sensor with other SwitchBot products and set up a ”Scene“ in the SwitchBot app. When windows are opened, the SwitchBot Bot will be triggered to turn off the Air purifier automatically.
[Remote Alert Notification & Voice Alarm from Alexa] You will receive a door-open alert notification on your phone if a suspicious person enters the house while you are away. Alexa will start a voice alarm to scare off any burglars, ensuring your apartment security. [Remote Alert Notification] You will receive a notification if a suspicious person enters the house while you are away. (SwitchBot Hub required)
Customers say
Customers find the door alarm sensor works well and is easy to install, with reliable build quality and good value for money. They appreciate its motion sensor capabilities, with one customer noting it can turn on Hue lights, and they like its features, with one mentioning good automation possibilities. While some customers report very little lag, others find it slow to execute.
AI-generated from the text of customer reviews
13 reviews for SwitchBot Door Alarm Contact Sensor – Smart Home Security Wireless Window Alarm and Door Sensor, Add SwitchBot Hub Mini to be Compatible with Alexa (1 Pack)
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Original price was: £16.99.£12.99Current price is: £12.99.
Mr T –
Better than expected
This works as dual purpose alarm and smart sensor. Works better than expected. For me its used as a door alarm during evening to early morning. During the day used for automation in the house via alexa integration. Good value and well made.
SAMUEL J BOOTH –
Easy to install, smart to use
Smart home systems can be clunky and difficult to use, but the SwitchBot ones are great. They work well straight out of the box. There is enough customisation available in the app so you can do what you want, without it being too technical and overly complicated. Would recommend.
Bazza –
Works well in the Switchbot universe
This switchbot stuff works well but isn’t compatible with tuya smartlife app. I can set up basic routines through Alexa but it will then lack all the ‘extra’ functions you get through the Switchbot app. Personally I’m moving away from the switchbot smart stuff
Aaron Bennett –
Added motion sensor is a game changer
I’ve tried a lot of different contact sensors but this one is the only one with the motion sensor built in, which is brillant.Am using homebridge on RaspberryPi to make it even more integrated, now, when I go into the lobby, the motion sensor turns on my Hue lights, so I don’t even need to open the door. Perfect!The only downside is I can’t program the button to do anything – would have loved to be able to control this to set my Ring alarm when leaving the house, but not even the Homebridge plugin opens this up.If you have SwitchBot lights I’d imagine the button comes in very handy.Usual build quality from SwitchBot too, have loads of their products and always top notch.
Lee M. –
Great in theory but has a major flaw
These are the most reliable and battery efficient door sensors I have found.They are at first glance feature packed as they have multiple sensors built in. From the obvious door open and closed detection it also has built in… Ambient light level sensing, motion sensing (which when used in conjunction with the door open and closed sensor determines if you’re vhave entered of left the room/building), temperature sensing and finally a button to trigger events or scenes.So what’s the problem? Surely the reliability and all these features should get them a 5 star rating? Well yes they would… BUT…Most of these features aren’t presented to other devices/frameworks such as Alexa or Smartthings. This means that the only features available to trigger an event or scene is the door open or closed sensor.This means it can’t be used for launching a simple scenes such as turning the lights on when entering a room (and when it’s dark) and off again when leaving the room.This is a major flaw and limitation. I’m can’t say if this limitation can be overcome using something like IFTTT or Home Assistant.
Mark Harris –
Great product!!!
Reliable, quick and easy to set up, decent price and great customer service.
Tony Stubbs –
It does far more than you think
Seriously well constructed piece of kit that combines multiple sensors in with a programmable switch. Really useful and far more than just a contact sensor
WCarp –
works well with Alexa
Smaller than my last door contact sensorWorks well with my old switchbot HubUsed with Alexa routines to switch lights on off with door opening on and off (approx 1-3 seconds wait time)Takes AAA batteriesVery happy with this product
Marc –
He estado buscando una forma sencilla y fiable de monitorizar mis puertas y ventanas, y el SwitchBot Sensor de Contacto ha superado mis expectativas. Su tamaño compacto hace que sea discreto y fácil de instalar en casi cualquier marco sin ser intrusivo.La instalación fue rapidÃsima. Simplemente retiras la pelÃcula protectora del adhesivo y lo pegas en la puerta/ventana y el marco. La alineación es sencilla gracias a las pequeñas marcas en los dos componentes. En cuestión de minutos, ya tenÃa varios sensores instalados en diferentes puntos de mi casa.La conectividad con la aplicación SwitchBot es instantánea y muy estable a través de Bluetooth. Recibo notificaciones instantáneas en mi teléfono cada vez que una puerta o ventana se abre o se cierra. Esto me da una gran tranquilidad, especialmente cuando no estoy en casa.Lo que realmente me gusta es su versatilidad. No solo me avisa de aperturas inesperadas, sino que también lo he integrado con otros dispositivos SwitchBot a través de escenas en la aplicación. Por ejemplo, al abrir la puerta del armario, se enciende automáticamente una luz SwitchBot Bulb. ¡Las posibilidades son muchas!La duración de la baterÃa ha sido excelente hasta ahora. Llevo varias semanas usándolos y aún no he tenido que preocuparme por reemplazarlas. Además, la aplicación te avisa cuando la baterÃa está baja.Aunque no es compatible directamente con Matter en este momento, su integración con el ecosistema SwitchBot y su compatibilidad con asistentes de voz como Alexa y Google Assistant a través del SwitchBot Hub Mini (se vende por separado) lo hacen muy funcional dentro de un hogar inteligente.En resumen:El SwitchBot Sensor de Contacto de Ventana para Puerta es un dispositivo esencial para cualquiera que busque una solución de seguridad y automatización sencilla y eficaz. Su fácil instalación, notificaciones instantáneas y versatilidad lo convierten en una excelente adición a cualquier hogar inteligente, especialmente si ya utilizas otros productos de SwitchBot.Pros:Muy fácil y rápido de instalar (sin necesidad de herramientas).Notificaciones instantáneas y fiables de apertura/cierre.Tamaño compacto y discreto.Se integra bien con otros dispositivos SwitchBot a través de escenas.Buena duración de la baterÃa.Precio asequible.Contras:No es compatible directamente con Matter (requiere SwitchBot Hub Mini para integración con otros ecosistemas).La conectividad directa es por Bluetooth (el alcance puede ser limitado sin el Hub).¿Lo recomendarÃa? ¡SÃ, absolutamente! Es una forma económica y eficaz de añadir una capa extra de seguridad y automatización a tu hogar.
Brad L. –
I have this setup on my RV so when the door opens I can have a notification sent to my phone. It works great and has a motion detector built in as well. Very happy with it and Switchbot automation.
Ä°smail –
Ãrün hem kapı/pencere sensörü hem de hareket sensörü olarak çalıÅabiliyor. Home Assistant ile entegre çalıÅıyor, ancak baÄlantının Bluetooth üzerinden olduÄunu unutmayın. Ben aynı markanın hareket sensörünü de aldım, HA üzerinden otomasyon senaryolarında kullanıyorum, memnunum.
Michael Armany –
spend hours trying to connect it to Alexa or smart life app but it fails..its only connects to smartbot app and can’t access it outside this app…after alot of search i find out you need to buy another device (hub) to be able to connect to third party assistant like Alexa. Seller should mention that on description. Usless. Im returning it back
Tobi –
Ich nutze den SwitchBot Tür-/Fensterkontakt-Sensor in unserem Camper, um damit Fenster, Türen und Dachluken im Blick zu behalten â und bin wirklich begeistert. Der Sensor funktioniert nicht nur als klassischer Ãffnungsmelder, sondern bietet zusätzlich einen Bewegungs- und Lichtsensor. Damit ergeben sich viele sinnvolle Automationen.In meinem Setup ist der Sensor über SwitchBot Hub 2 und Matter-Anbindung in Home Assistant integriert. Dort habe ich eine Alarmüberwachung eingerichtet, die automatisch reagiert, wenn bei Abwesenheit ein Fenster geöffnet oder eine Bewegung erkannt wird. Auch der Lichtwert kann als Auslöser verwendet werden â z.â¯B. um bei Dunkelheit das Licht einzuschalten.Die Montage ist einfach â per Klebestreifen â und der Sensor arbeitet zuverlässig, auch bei wechselnden Temperaturen im Wohnmobil.PRO:⢠Multifunktional: Tür-/Fensterkontakt, Bewegungssensor & Lichtsensor in einem⢠Ideal für Ãberwachung im Camper oder Haus⢠Gute Integration in Home Assistant (mit SwitchBot Hub & Matter)⢠Zuverlässige Reaktion & sinnvolle Automationen möglich⢠Einfache Montage & kompakte Bauform⢠Geringer BatterieverbrauchCONTRA:⢠Matter-/HomeKit-Unterstützung nur über zusätzlichen SwitchBot Hub⢠Kein externer Anschluss oder IP65 â nicht für AuÃenmontage geeignet⢠Benötigt etwas Konfigurationsaufwand für Home AssistantFAZIT:Der SwitchBot Tür-/Fenstersensor ist mehr als nur ein einfacher Kontaktmelder: Er ist ein kompakter, smarter All-in-One-Sensor, der sich besonders im Camper oder mobilen Smart Home hervorragend macht. In Verbindung mit Home Assistant lässt sich eine effektive Ãberwachung oder sogar ein Alarmsystem realisieren â ohne viel Aufwand.Zielgruppe:Ideal für Campingfreunde, Smart-Home-Einsteiger und Home-Assistant-Nutzer, die Fenster, Türen oder Lichtverhältnisse automatisiert überwachen möchten â besonders in mobilen oder kleinen Wohnräumen.Insgesamt: 5 von 5 Sternen â kleines Gerät mit groÃer Wirkung!