
SWS0A Ultra-thin Smart Water Leak Alarm, 1 × Alarm
Water Leak Detectors
X-Sense
See product detailsX-Sense base station guide
See when the SBS50 is required, what it adds to compatible X-Sense water leak sensors, and when a sensor-only pack makes more sense.
Products are selected from the active DIY Price Watch catalog based on current authorized affiliate-feed availability. This is not a hands-on product test or ranking.
For the X-Sense SWS51, yes: X-Sense explicitly says the SBS50 is required. One SBS50 can manage up to 50 compatible devices, so if you already own one, you generally do not need another base station just to add more compatible leak sensors.
The SBS50 is the hub that connects compatible X-Sense devices to the X-Sense Home Security app over 2.4 GHz Wi-Fi.
X-Sense says the SBS50 supports up to 50 interconnected smart devices and provides real-time push notifications. With the SWS51, both the detector and the base station can sound when a leak is detected.
| Situation | What to buy | Why |
|---|---|---|
| You are starting with SWS51 and do not own an SBS50 | A bundle that includes the SBS50 | X-Sense lists the SBS50 as required for SWS51 operation. |
| You already own an SBS50 | Sensor-only pack | One SBS50 can manage multiple compatible devices, so another hub is usually unnecessary. |
| You are building a larger X-Sense safety system | One SBS50 plus compatible devices | The hub can support water leak sensors alongside other compatible X-Sense safety products. |
DIY Price Watch currently tracks both sensor-only packs and bundles that include the SBS50. That means two prices that look similar may represent different starting points.
Before choosing the lowest observed price, check whether you already have the base station the sensor requires. A cheaper sensor-only pack is not the cheaper setup if you still need to buy the hub separately.
X-Sense states that one SBS50 can manage up to 50 compatible devices. That makes the hub a shared part of the system rather than something you buy again for every room.
If you already use an SBS50 for other compatible X-Sense devices, adding leak sensors can be an expansion of the same system rather than a separate setup.
If you are buying SWS51 sensors for the first time, include the SBS50 in your plan. If you already have a compatible SBS50, compare the sensor-only packs by how many additional leak zones you want to cover.
Community discussions were used to identify recurring buyer questions. Product facts come from current DIY Price Watch catalog data and first-party manufacturer documentation.
Currently tracked
Current observed prices can change. Open any product page to see the latest retailer information available to DIY Price Watch.

Water Leak Detectors
X-Sense
See product details
Water Leak Detectors
X-Sense
See product details
Water Leak Detectors
X-Sense
See product details
Water Leak Detectors
X-Sense
See product details
Water Leak Detectors
X-Sense
See product details
Water Leak Detectors
X-Sense
See product details
Water Leak Detectors
X-Sense
See product detailsThis guide is based on recurring homeowner questions, current DIY Price Watch catalog data, and cited manufacturer or product documentation. It is not a hands-on product test.
Related X-Sense water leak products currently tracked by DIY Price Watch.