Why Choose the Carlo Gavazzi BSF-WAT-U Water Sensor?
The Carlo Gavazzi BSF-WAT-U is a compact and reliable Smart Dupline® water detection sensor designed to detect moisture and water leaks before they can cause significant damage. As part of the Carlo Gavazzi smart-house automation system, it provides an effective solution for water alarm monitoring in residential, commercial and building automation applications.
The BSF-WAT-U features an integrated water sensor input together with screw terminals for connection of an external Felson moisture cable. Its water-resistant construction, compact housing and simple Smart Dupline® bus connection make it ideal for reliable leak detection and automated water alarm functions.
With IP67 protection and a fast response time of up to 156 ms, the BSF-WAT-U provides dependable water detection for smart-house controllers and building automation systems. The module is bus supplied, eliminating the need for a separate power supply.
Key Advantages
Compact Smart Dupline® water detection sensor for automated leak monitoring.
Integrated water sensor input with external sensor connection capability.
IP67 protection rating suitable for demanding environments.
Fast water detection response for early leak warning.
Bus-powered design simplifies installation and system integration.
Compatible with Carlo Gavazzi smart-house controllers.
Key Features
Carlo Gavazzi Smart Dupline® water detection series.
Two-channel transmitter module.
Integrated water sensor input.
External input for Felson moisture cable.
IP67 water-resistant housing.
Fully programmable through compatible SH tools.
Automatic identification with SH2WEB24 controller systems.
Compact ABS enclosure with wall mounting capability.
Reliable Water Detection for Smart Buildings
Water detection sensors such as the Carlo Gavazzi BSF-WAT-U help protect buildings by identifying leaks and moisture at an early stage. When connected to a smart-house controller, the sensor can activate programmed water alarm functions and support automated responses to prevent water damage.
The Smart Dupline® communication platform allows the BSF-WAT-U to integrate seamlessly into modern building automation systems. Its compact design and programmable operation make it suitable for both new installations and retrofit projects requiring reliable water monitoring.
Typical Applications
Smart home water leak detection systems.
Building automation water alarm functions.
Basement and utility room monitoring.
Commercial property leak prevention.
Plant room and equipment protection.
Integration with Carlo Gavazzi smart-house controllers.
Technical Specifications
Manufacturer
Carlo Gavazzi
Series
Smart Dupline®
Model
BSF-WAT-U
Product type
Water detection sensor module
Communication system
Smart Dupline® bus
Channels
2 input channels
Input
Integrated water sensor with parallel external sensor connection
Trigger resistance
150–470 kΩ
Response time
≤156 ms at 128 channels
Power supply
Bus supplied
Protection rating
IP67
Operating temperature
-20 to +50 °C
Storage temperature
-50 to +85 °C
Housing material
ABS
Housing colour
White
Dimensions (H × W × D)
approx. 70 × 39 × 15.5 mm
Connection
Screw terminals 0.2–1.5 mm²
Frequently Asked Questions
What is the Carlo Gavazzi BSF-WAT-U used for?
The BSF-WAT-U is a Smart Dupline® water detection sensor used to identify moisture and water leaks and provide alarm signals within automation systems.
How does the BSF-WAT-U detect water?
The sensor uses an integrated water detection input and can also connect to an external Felson moisture cable for expanded monitoring capability.
What protection rating does the BSF-WAT-U have?
The BSF-WAT-U has an IP67 protection rating, providing resistance against dust and water ingress.
How is the BSF-WAT-U powered?
The BSF-WAT-U is powered directly from the Smart Dupline® bus, removing the requirement for a separate power supply.
Where is this water sensor typically installed?
The BSF-WAT-U is typically installed in smart homes, commercial buildings, utility areas and automation systems requiring early water leak detection.
Trusted by Building Automation Professionals
Carlo Gavazzi Smart Dupline® sensors are trusted by automation engineers and system integrators worldwide to provide reliable monitoring, efficient control and seamless integration into intelligent building systems.
Manufacturer
Carlo Gavazzi
Series
Smart Dupline®
Model
BSF-WAT-U
Product type
Water detection sensor module
Communication system
Smart Dupline® bus
Channels
2 input channels
Input
Integrated water sensor with parallel external sensor connection
Trigger resistance
150–470 kΩ
Response time
≤156 ms at 128 channels
Power supply
Bus supplied
Protection rating
IP67
Operating temperature
-20 to +50 °C
Storage temperature
-50 to +85 °C
Housing material
ABS
Housing colour
White
Dimensions (H × W × D)
approx. 70 × 39 × 15.5 mm
Connection
Screw terminals 0.2–1.5 mm²
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
What product ranges do you supply
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Can you help specify the correct part?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Do you have stock for urgent orders?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What are your delivery times and costs?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What about warranties, returns and faulty items?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...