Severn WLD
What is Severn WLD
Severn WLD is the world's first smart tape that acts as a water leak detector and is LAIIER's first solution using Severn technology.
Two drops are all it takes
Thanks to the high resolution of Severn, Severn WLD can detect the presence of just a couple of drops of water. This allows you to detect leaks early, before they can cause any damage.


Reach unreachable locations
Because the Severn Sensors are so thin, they can reach and cover areas that other water leak detectors can't, such as underneath appliances, around pipes or underneath flat roofs.

A combination of printed sensors and electronics
Severn WLD consists of Severn Sensors and a Severn Board, LAIIER's first LoRaWAN-enabled, battery-powered resistive sensing hardware. The Severn Board powers the sensor and checks every minute the presence of water. Once it detects a leak forming, it sends an emergency message periodically via LoRaWAN to the Surface to Cloud dashboard until the leak has been fixed.

Powered by the Severn Board
The Severn Board is the hardware that activates the sensors. It is powered by a battery and uses LoRaWAN to send events to the Surface to Cloud platform.
Technical Specifications
Hardware and Enclosure Dimensions
95 x 58 x 24 mm
Sensor Dimensions
Vary by type, see included drawings
Hardware and Enclosure Weight
82g
Operating Temperature Range
-30°C to 60°C
Operating Humidity Range
<90%RH
Sensitivity
Dependent on sensor design, maximum resolution of 0.1 ml of water
Resolution
Up to 12 electrodes per sensor with theoretical range of 0-1023
Activation Method
Magnet
Wireless Communication Protocol
LoRaWAN
Read Range
10 km (line-of-sight, actual transmission distance depends on sensor placement and environment)
Antenna Type
Built-in antenna
Available frequency
US915, AU915, EU868 (configured before shipment)
Battery Type
AA Li-SOCl₂ cell
Operating Voltage
3.6V
Peak Current Drawn
105mA
Active Battery Lifetime
18 months
Housing
Nylon, not currently IP rated
Mounting
Self-adhesive, screw mounts available on enclosure
Sensor Connector
FFC
How It Works
1
Stick the sensor down
2
Attach the hardware to the sensor
3
Power the hardware on
4
Receive data via LoRaWAN
Use Case Library

Dishwasher Leaks
Dishwasher leaks water onto the floor causing damage in the short term and mold in the long term.

Flat Roof Leaks
Detecting water through a range of different roofing layers. Early detection of water in upper layers can prevent damage to lower layers.

Exposed Pipe Leaks
Water pipe leaks are more likely to occur in basements and utility rooms of commercial properties where there are many more connections and joints.

Under Sink Leaks
Detecting water in tight spaces beneath a sink can save expensive damage to surrounding furnishings and prevent catastrophic leaks.

Tanked Water Heater Leaks
Rapidly detecting the first signs of a leak from a tanked hot water heater. Only small amounts of water leak at first, but when a pinhole forms, a catastrophic failure is inevitable.

Exhaust Scrubber Leaks
Detecting the first signs of water leaks from marine exhaust scrubbers to prevent major onboard flooding. Exhaust scrubbers are a highly corrosive environment needing extra care.
REGISTER YOUR INTEREST
We offer Severn WLD as two packages: Hardware as a Service or as a purchasable, consisting of a Severn Board and a set of Severn Sensors. We have completed our first run of production, which we are slowly rolling out. If you are interested in getting your hands on Severn WLD from our second production, please register your interest below.