SwitchBot Contact Sensor | Door and Window Sensor with Motion Detection

Four sensors in one compact device A regular door/window sensor only registers open or closed. The SwitchBot Contact Sensor (W1201500) does that too, but also adds a motion sensor, a light sensor, and a programmable button. Attach it to a door, window, refrigerator, or drawer, and you immediately have four data sources in one small device, powered by 2 AAA batteries with an expected lifespan of approximately 3 years. The protocol is Bluetooth Low Energy (BLE). Within your local network, the sensor pairs directly with Home Assistant without a hub, provided you have Bluetooth. Push notifications outside your home network via the SwitchBot app require a SwitchBot Hub Mini or Hub 2, which are sold separately. Do you want a door or window sensor via Zigbee for a greater range or simpler integration without Bluetooth limitations? Then check out the door and window sensor assortment. What the sensor measures Open/closed status via magnetic contact, maximum distance between sensor and magnet 30 mm Motion up to 5 meters distance, detection angle 120° horizontal and 60° vertical Light intensity via built-in light sensor (day/night indication) Programmable button on the device, usable as a manual trigger Power and connectivity The sensor operates on 2 AAA batteries that are pre-installed. Under normal use (80 openings, 80 closings, and 40 button actions per day at temperatures below 25°C), SwitchBot achieves a lifespan of approximately 3 years. The connection protocol is exclusively Bluetooth Low Energy (BLE, Bluetooth 5.0). There is no Wi-Fi, Zigbee, or Z-Wave. Mounting and placement Included are a 3M adhesive sticker, screws, and wall plugs. The sensor works on almost any smooth surface: wooden doors, plastic window frames, metal drawers, and refrigerators. When placing, maintain a maximum distance of 30 mm between the sensor and the magnet. The sensor is only available in white and has a UV-resistant ABS housing. Home Assistant The SwitchBot Contact Sensor pairs via the official SwitchBot Bluetooth integration in Home Assistant. All communication occurs locally via Bluetooth, without a cloud and without a SwitchBot account. Step by step: Ensure Bluetooth is active on your Home Assistant server. The Home Assistant Green and Yellow do not have built-in Bluetooth and require a separate USB Bluetooth adapter or a Bluetooth proxy. The N150 Home Assistant Servers from slimhuisje.nl do have built-in Bluetooth and work directly. Go to Settings > Devices & Services > Add integration. Search for SwitchBot Bluetooth and follow the wizard. Briefly press the sensor button if it does not appear automatically. After pairing, the entities binary_sensor contact (open/closed), binary_sensor motion, and sensor battery percentage will appear. The button and light sensor are currently not available as an entity in the standard SwitchBot Bluetooth integration. Bluetooth range can be easily extended with an ESP32 as a proxy via ESPHome Bluetooth proxy. Use the BLE MAC address (found in the SwitchBot app under Device Settings > Device Info) to distinguish multiple sensors. All communication is completely local with no cloud dependency. Homey The SwitchBot Contact Sensor works with Homey Pro and Homey Bridge via the official SwitchBot app in the Homey App Store. Homey communicates directly with the sensor via its built-in Bluetooth, without a SwitchBot Hub. The available entities in Homey are limited to contact and motion, similar to the Home Assistant integration. Other platforms Via a SwitchBot Hub Mini or Hub 2, the sensor can also be linked to Amazon Alexa and Google Home. Apple Home and Matter are not supported by this model. The SwitchBot app (iOS and Android) offers push notifications for open/closed events, but requires a SwitchBot Hub for this. Automation examples Example 1: Lights on upon entry in the dark Trigger: the front door sensor reports "open" (contact binary_sensor changes to open). Condition: the Contact Sensor's light sensor reports a low light value (dark). Action: switch on the hallway lighting to 100% brightness. Result: the light automatically turns on upon entry, only if it is dark. Example 2: Alarm and notification if window is opened during absence Trigger: window sensor reports "open" (contact binary_sensor changes to open). Condition: all residents are absent (all Person entities set to "away"). Action 1: send a push notification via the Home Assistant Companion App: "Living room window open while no one is home". Action 2: switch on a smart plug with a siren or lamp as an additional visual signal. Result: you are always warned of unexpected openings. Points of attention Protocol is exclusively Bluetooth BLE: no Zigbee, Z-Wave, or Wi-Fi. Effective range within a home is 5 to 15 meters depending on walls and interference. Remote push notifications via the SwitchBot app require a SwitchBot Hub Mini or Hub 2, not included. The button and light sensor are not available as an entity in the standard Home Assistant SwitchBot Bluetooth integration. Maximum distance between sensor and magnet is 30 mm; larger gap causes faulty open detection. Only available in white. Apple Home and Matter are not supported by this model. Box contents 1x SwitchBot Contact Sensor (W1201500) 1x Magnet 2x AAA battery (pre-installed) 1x 3M mounting sticker Screws and wall plugs Quick guide Compatible platforms Home Assistant (SwitchBot Bluetooth integration, local), Homey Pro, Homey Bridge, Amazon Alexa (via SwitchBot Hub), Google Home (via SwitchBot Hub), SwitchBot app (iOS/Android). Technical specifications Specification Value Model W1201500 EAN 850007706388 Protocol Bluetooth Low Energy (BLE 5.0) Sensor dimensions 70.5 x 25.5 x 23 mm Magnet dimensions 35 x 12 x 12.5 mm Sensor weight 43 g (including batteries) Power supply 2x AAA battery Battery life Approximately 3 years with normal use below 25°C Motion detection range 5 meters Motion detection angle 120° horizontal / 60° vertical Maximum magnet distance 30 mm Operating temperature 10°C to 60°C Humidity 20% to 85% RH Color White Material ABS with UV coating Country of origin China HS code 8531.10.95 (verification via tarief.douane.nl recommended) Frequently Asked Questions Do I need a SwitchBot Hub for Home Assistant? No. The sensor pairs directly via Bluetooth with Home Assistant without a hub. A SwitchBot Hub is only needed for push notifications outside your home network via the SwitchBot app. Which entities appear in Home Assistant after pairing? After pairing via the SwitchBot Bluetooth integration, a binary_sensor for contact (open/closed), a binary_sensor for motion, and a sensor for battery percentage appear. The built-in button and light sensor are currently not available as an entity in the standard integration. What is the practical Bluetooth range? Within a home, the effective range is typically 5 to 15 meters, depending on walls and interference. Range can be extended with an ESP32 as a Bluetooth proxy via ESPHome. Are the batteries included? Yes, 2 AAA batteries are pre-installed and included, and the sensor is ready to use right out of the box. Does the sensor work with Homey? Yes. The sensor is compatible with Homey Pro and Homey Bridge via the official SwitchBot app in the Homey App Store, without an additional hub. Is there also a Zigbee version of this sensor? No, the W1201500 works exclusively with Bluetooth BLE. If you are looking for a Zigbee door or window sensor, you will find alternatives in our door and window sensors category. Where in the house does the sensor work? The sensor works on doors, windows, drawers, refrigerators, and pet cages, on any smooth surface via the included 3M sticker or screws. Keep the magnet distance under 30 mm for reliable detection. Directly available and paired with Home Assistant via Bluetooth in minutes.