Leak and Motion Sensor Installation in Warsaw

You come back from holiday to find a lake in your flat — the washing machine hose burst overnight. Or you walk into a dark stairwell, fumbling for the light switch. Both problems can be fixed in a couple of hours: a leak sensor under the sink and a motion sensor at the entrance. We install both types across all of Warsaw — from Wola to Ursynow. The work is straightforward, but proper placement and calibration matter, otherwise the sensor stays silent when you need it or triggers false alarms all day long.

How much does sensor installation cost

The cost depends on the sensor type (wired or wireless), the number of installation points, and how difficult the cable routing is. Wireless WiFi sensors take 20-30 minutes each — they run on batteries and send alerts to your phone. Wired systems need a connection to a controller and cable runs — it takes longer but is more reliable. Basic fixings are included in the service price; sensors and controllers are charged separately. Current prices are in the table below.

How the installation works

1. You send photos of the rooms where you need sensors — the technician estimates the number of points and gives you a price.
2. We agree on a time — usually same-day or next-day visit.
3. On site, the technician identifies the best placement: leak sensors go on the floor near the sink, washing machine, boiler, and radiator; motion sensors go at the entrance, stairwell, garage, or driveway.
4. For wireless sensors: we mount them in place, connect to WiFi, set up phone notifications, and test the trigger.
5. For wired sensors: we run cable from the sensor to the controller, connect according to the manufacturer’s diagram, and adjust sensitivity.
6. Motion sensors are calibrated for coverage zone and viewing angle — so they react to people, not to your cat.
7. We test every sensor: for leaks we drip water onto the probe; for motion we walk through the zone. We confirm the signal gets through.

Common mistakes when installing sensors

• Placing the leak sensor on a raised surface instead of the floor — water will reach it only after half the room is already flooded.
• Mounting the motion sensor facing a window — it triggers from sunlight and swaying branches.
• Forgetting to check WiFi signal strength at the mounting point — the sensor loses connection through the wall.
• Not replacing the battery on time — the sensor dies silently, and you only find out during a real leak.
• Mounting the motion sensor too high — the detection zone goes upward and people walk underneath it.
• Not accounting for pets — a motion sensor without pet immunity triggers every five minutes.
• Installing one leak sensor for the entire flat — you need at least one per wet zone.
• Using cheap batteries — they drain three times faster and the sensor stops working in winter.

What to prepare before the technician arrives

• Decide exactly where you need leak sensors — under the sink, behind the washing machine, near the boiler, on the bathroom floor.
• Decide on motion sensor locations — entrance, stairwell landing, yard, garage.
• Buy the sensors in advance or ask the technician to recommend a model — discuss it by phone.
• For WiFi sensors: make sure your router signal reaches the installation spot. If not, you will need a repeater.
• For wired systems: ensure access to the location where the controller will go (usually near the electrical panel).
• Clear the installation areas — remove items from under the sink, pull the washing machine forward.
• Install the manufacturer’s app on your phone if using WiFi sensors — the technician will help with setup.
• Check that there are power outlets near the controller location (for wired systems).
• If you need smart home integration (Tuya, Home Assistant) — let the technician know in advance.
• Provide building access details: intercom code, parking information.

A real case from Warsaw

A flat owner in the Mokotow district asked us to install a leak protection system after his upstairs neighbour flooded the kitchen. We fitted four wireless WiFi leak sensors: under the kitchen sink, behind the dishwasher, next to the washing machine in the bathroom, and beside the boiler. All sensors were linked to a single app on his phone — when triggered, a push notification and an audible alarm on the sensor itself go off. The client also ordered two motion sensors: one at the building entrance to switch on stairwell lighting, and one in the yard for parking area illumination. The motion sensors were calibrated to ignore the neighbourhood cats. The entire installation took about three hours. A month later the client messaged us: the sensor under the sink had triggered — the siphon was leaking. It was caught in time and there was no serious damage. This is exactly the kind of situation where a sensor pays for itself with a single alert.

Frequently asked questions

Which sensors are better — wired or wireless?
For a flat, wireless WiFi sensors are usually enough. They are easier to install and send notifications to your phone. Wired sensors are more reliable for large houses and commercial properties where WiFi can be unstable.

Do I need a solenoid valve on the pipe?
For full automation, yes. The sensor detects a leak and sends a command to the valve to shut off the water. But it costs more and requires separate installation. A sensor with alerts is a good start — you shut the water off manually.

How often do sensor batteries need replacing?
On average every 1-2 years, depending on the manufacturer. Good sensors warn you about low battery via the app. Use quality batteries — this is not the place to cut corners.

Will the motion sensor trigger on pets?
If you choose a model with a Pet Immune function, no. These sensors ignore movement of objects weighing up to 20-25 kg. Ask about this feature when selecting a model.

Can sensors be connected to a smart home system?
Yes. Most WiFi sensors work via Tuya, Zigbee, or Z-Wave and integrate with Home Assistant, Google Home, and Alexa. If you already have a system, let the technician know so compatible sensors can be selected.

What is included in the installation price?
Labour, fixings, configuration, testing, and travel within Warsaw. The sensors themselves, batteries, and controllers are charged separately. You can buy them yourself or have the technician source them.

Does a leak sensor help with home insurance?
Yes, some insurance companies in Poland offer a discount on the policy if a leak protection system is installed. Check with your insurer — we can provide an installation certificate.

How many sensors do I need for a flat?
Minimum: one under the kitchen sink, one in the bathroom, one near the washing machine. Ideally, a separate sensor for every wet point. For motion: the entrance and one or two outdoor zones.

Who does the work

Sensor installation is carried out by technicians experienced in smart home and low-voltage systems. We work with WiFi, Zigbee, and wired sensors from all major manufacturers. We arrive with tools and help you choose equipment and configure the app. To book, call or message us — we reply within an hour.