# SwitchBot Contact Sensor W1201500, 3-pack

SwitchBot Contact Sensor W1201500 is a three-pack of wireless sensors for detecting whether doors or windows are open or closed. Smart-home scenes, remote phone alerts and Alexa voice alarms require a compatible SwitchBot hub, which is not listed in the stated package contents.

- [Original product page](https://bargainpostbox.co.uk/product/switchbot-contact-sensor-w1201500-3-pack)
- [View offer](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: SwitchBot
- Model: W1201500
- Category: Electronics > Smart Home & Security > Alarms & Sensors
- Price: 33.13 GBP
- Previous price: 38.98 GBP
- Discount: 15%
- Price checked: 2026-11-14T09:53:30.485Z
- Rating: 4.4 / 5
- Reviews: 137

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Detects door and window opening or closing using a sensor body and aligned magnet.
- Built-in motion and light sensors can support configured home scenes. Hub Mini is required for the stated enter-or-leave automations.
- Hub-connected use is described for remote phone alerts and Alexa voice alarms.
- The listing specifies three contact sensors. A hub is not included in the explicit contents entry.

## Pros

- Three sensors can cover multiple doors, windows or other suitable opening points.
- The motion and light sensing features can be used with configured SwitchBot scenes and compatible devices.
- The listing describes tool-free installation.

## Specifications

### Identity
- Brand: SwitchBot
- Model: W1201500
### Dimensions and installation
- Mounting type listed: Door Mount
- Dimensions listed: 10.2 x 2.5 x 10.2 centimetres
- Weight listed: 49 Grams
### Materials
- Material listed: Plastic

## Before you buy

- The magnet must align with the bottom of the sensor body and remain less than 1.2 inches \(30mm\) away. The stated sensing range is up to 5 metres, with the listing noting lab conditions of 77°F \(25°C\).
- A SwitchBot Hub is required for remote notifications and some automation or Alexa functions. The product title mentions adding a Hub Mini, but the explicit contents list names only the Contact Sensor 3Pack. Check the selected listing if a hub is expected.

## In the box

- 3 Contact Sensors (Included)

## A good fit for

- People wanting several sensors for doors, windows, drawers or similar opening-and-closing monitoring.
- Existing SwitchBot users who can use a compatible hub for remote alerts or app-based scenes.

## Less suited to

- Buyers who need remote alerts or hub-dependent automations without purchasing a compatible SwitchBot hub.
- Buyers seeking a standalone siren or a complete alarm system, as those are not established by the stated package contents.

## Customer feedback

Customer feedback highlights ease of installation, HomeKit connectivity and the built-in motion sensor. One customer reports door events registering in under a second, while responsiveness is also described as mixed. For buyers using these sensors for prompt door or window status, responsiveness matters, but the feedback does not establish a guaranteed response time or resolve hub requirements for remote functions.
- Positive themes: Customers report easy installation.
- Positive themes: Customers report that the sensor works well with HomeKit and appreciate its motion-sensing feature.
- Mixed feedback: Responsiveness feedback is mixed. A customer reports events registering in under a second, but no consistent response time is established.

## Frequently asked questions

### Does this three-pack include a SwitchBot Hub Mini?
The explicit contents list names Contact Sensor 3Pack only. The title says to add a Hub Mini for Alexa compatibility, so do not assume a hub is included.
### Can it send alerts when I am away?
The listing describes remote phone alerts when connected to a SwitchBot Hub. A hub is therefore needed for that use.
### How close must the magnet be to the sensor?
The two parts need to be aligned, with a distance of less than 1.2 inches \(30mm\).
### Can it trigger smart-home scenes?
The listing describes scenes through the SwitchBot app. It specifically requires a SwitchBot Hub Mini for the stated coming-home and leaving-home automation.

## Alternative options

- [SwitchBot Smart Motion Door Sensor - Wireless Home Security System, PIR Motion Detector Alert, Add SwitchBot Hub Mini to be Compatible with Alexa](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [Aqara Zigbee Door and Window Sensor, Wireless Mini Contact Sensor \(3\) \| Compatible with Apple HomeKit, Home Assistant, Alexa etc. for Alarm System and Smart Home Automation, Aqara Hub Required](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [Aqara Zigbee Door and Window Sensor, Wireless Mini Contact Sensor \| for Alarm System and Smart Home Automation, Compatible with Apple HomeKit, Home Assistant, Alexa, Aqara Hub Required](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [Wolf Guard 433MHz Wireless Door Window Magnetic Sensor \| Addition to Alarm System](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [XNH 13 Piece Wireless Home Alarm System - 8 Door/Window Sensors, 2 Motion Detectors, 2 Remote Controls,Supports Mobile App Alerts, No Monthly Fees, Compatible With Alexa/Google](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [SONOFF SNZB-04PR1 Zigbee Door and Window Sensor with Tamper Proof \| contact sensor, open/close monitoring, home security, automation, work with Home Assistant, SmartThings, Alexa](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [SwitchBot Presence Sensor with Matter Hub, mmWave Motion Sensor Set \| mmWave, PIR & Light Sensor detects motion/stillness, Apple Home/Alexa/Google/Home Assistant, IR devices via app](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [ACRIMO Fabtrack Extendable Motorized Curtain Rail, Width 1-1.6 Meters \| Central Curtain Opening, WiFi Motor and Remote Control, Compatible with Google Home, Alexa, and Tuya Smart App](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [Temtop Air Quality Monitor PM2.5 Thermo-Hygrometer Digital Hygrometer Indoor Humidity Gauge for Home Office Humidity monitor for Bedroom, Livingroom](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [SwitchBot Air Purifier with Night Light, CADR 400m³/h for up to 83㎡, 3-Layer Filtration System removes 99.97% of pollutants, 20dB Sleep Mode, Supports Alexa&App Control, Chew-Proof Wire ideal for Pets](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [Tempest Weather Station with AI Forecasting, Wireless WiFi Weather Station with Built-In Wind Meter & Rain Gauge, Real-Time Weather, App & Alexa \| Smart Home Weather Station](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)

## Add-ons

- [SwitchBot Hub Mini Smart Control, Universal Hub for Smart Home, IR Remote for TV and Air Conditioner, Connect SwitchBot Devices to WiFi, Works with Alexa, Google Home](https://bargainpostbox.co.uk/visit/switchbot-contact-sensor-w1201500-3-pack)
- [SwitchBot mmWave Presence Sensor, Smart Home Motion Sensor with Battery \| mmWave, PIR & Light Sensor detects motion and stillness, Matter via Hub for Home Assistant/Alexa/Google Home/Apple Home](https://bargainpostbox.co.uk/visit/switchbot-w8200000-mmwave-presence-sensor)

## Images

![SwitchBot Contact Sensor W1201500, 3-pack — 1](https://bargainpostbox.co.uk/i/KnjC9pW887CzmLnfQGWFYGRJ1y7o0Hd-gL_AGyLE-6cbbsmcsDNfCu2ysCmoGj_9H8wZZ16OEJDuGPOHIkJwbLHLagpKh6M2lRdW8BTRsv4I6o1x5qQmKpMz.jpg)

![SwitchBot Contact Sensor W1201500, 3-pack — 2](https://bargainpostbox.co.uk/i/PGMilLDp2JfShDaIHrxIVC1vdv-TpSql2tg0X6pywvtnfgBIvC6P95NPoI5fpHbQe9S328nXHmqFdJ9JpA3iQy9bULpBOcvSmOuLYXguaNhAB3LsrVA9f3N1.jpg)

![SwitchBot Contact Sensor W1201500, 3-pack — 3](https://bargainpostbox.co.uk/i/u3GaDOtFe6kzawAPYYab2xiPnZKPFBb9mFV9hv-1-PVdFupHHJA3S7vHDhhQXSFFrUEbLe0isZEVZzqJF9ywzv4N8F0s-3vFGF7FlCcNSnnxKrXtrsf7C9Ml.jpg)

![SwitchBot Contact Sensor W1201500, 3-pack — 4](https://bargainpostbox.co.uk/i/nrNpWmCwIkkrWIQgz9Qq6xeprycO5-GnEC8a4QE2K1gk8ba3qj2T2xaxuDqMb1pOfWlTa_NVnytQXhWGPwvRquni1-yAKIgVBGRZlKWkDDfCy3CvNz5H7zL-.jpg)

![SwitchBot Contact Sensor W1201500, 3-pack — 5](https://bargainpostbox.co.uk/i/d8NZMPGxucNFx6LYlJmdy76gDaaKPBT840VVShnxZXOEHCcj7DAKT597rzslLllbohscnDxUr1d2b8IEc8uIglqUy33JpY97A8KpUEHnPUJ6akDq36QhDt4B.jpg)

![SwitchBot Contact Sensor W1201500, 3-pack — 6](https://bargainpostbox.co.uk/i/cwTWVF95sczRONs8PhvJHGuDsY0y7j6JidqI3qifhjKi2QGlq_EL0m0vogya0ICuYhBqe2U5XBhwWhccU4OUhvrVUoKPXlAI_VKqr86bhZTZe9GOdMtGmDKL.jpg)

![SwitchBot Contact Sensor W1201500, 3-pack — 7](https://bargainpostbox.co.uk/i/Nzts0g-_poqsB_zUy0pzBuuJH2M-zZwgMig3MoCGVTdSJZooJLW2A-l7R6hR8J6c5A_Y1M0kUBtBvDrRD7T-qbfkqa5Fn9vsEmJhRxqMDh07IE-cN4W7FVb-.jpg)