Leak Sensor Cable

The sensing cable for the Shelly Flood Gen4. Water anywhere along its two metres registers as a leak, and cables chain together to cover a longer run.

$19.95 inc GST In stock at supplier · dispatches in 5 business days
Free shipping over $150 Ordered in from our supplier. Allow about 5 business days before it dispatches.
30-day returns Unused items, easy online returns
3-year warranty Backed by Shelly

Everything you need to know

The sections below cover what this cable does, where it fits, the full specifications, and how warranty and returns work. If something's still unanswered, the questions at the bottom cover the common ones.

Product features

What this cable does

This is the sensing cable for the Shelly Flood Gen4. Water touching it anywhere along its two metres registers as a leak, which is the difference between catching a slow drip under a hot water unit and only catching it once the puddle reaches a sensor in one particular spot. It has no electronics and no power of its own. One end connects to the Flood Gen4, or to another cable, and Shelly rates a chained run to 150 metres.

  • Two metres of sensing along the whole length
  • Chains to other cables, up to 150 m total
  • Connects to a Shelly Flood Gen4
  • No power or pairing of its own

How Shelly works

Shelly Logo
Hands fitting a wire into a Shelly Gen3 relay in front of a Shelly T-shirt

A Shelly is a small module that makes wiring you already have controllable. It joins your Wi-Fi directly, holds its schedules and scenes on the device itself, and keeps running them if your internet drops. Nothing you set up depends on Shelly's servers being reachable.

The device

The brain is the device

Shelly does the thinking locally, not in a data centre. Schedules, scenes and logic are stored on the unit and run there, so the lights still come on at dusk when the internet is out.

The network

No hub, no bridge

There is nothing to buy before the first one works. Where a Philips Hue setup is built around a Bridge that every light talks through, a Shelly joins your router directly and answers your phone from there.

The control

The app is optional

Every Shelly serves its own web interface, so you can set it up and run it from a browser on your own network, with no account. The Shelly Smart Control app and Shelly Cloud are free and add remote access and voice control, but nothing needs them.

The generations

What Gen1 to Gen4 means

Shelly has run through four hardware generations, and the same product name can exist in more than one of them. Later generations are faster and carry more radios than the ones before, which is why the generation is part of the name. The specifications on each page tell you which one you are looking at.

Getting started
1
It goes behind what you already have Start here

Shelly retrofits. The module fits behind the switch, socket or appliance that is already there, so your switch plates and fittings stay as they are and the original switch keeps working for anyone who just wants to flick it. Anything wired into a mains circuit is a job for a licensed electrician.

2
Open by design Then run it your way

Shelly publishes its local API and does not put it behind a developer account. Devices answer HTTP and MQTT on your own network and can run small scripts on themselves. That is why Shelly is the default choice for people building on Home Assistant, which ships an official Shelly integration.

Start with one and add more whenever you like. There is no hub to outgrow, and each Shelly works on its own whether you ever add another or not.

Specifications

Build
Placement
Indoor
Housing material
Plastic
Type
Device type
Sensing cable
Detection
Detects by
Sensing cable
Cable length
2 metres
Environment
Operating temperature
-20–40 °C
Operating humidity
30–70 % RH
Max altitude
2000 metres
Specifications
**Compatible devices:**
* Shelly Flood Gen 4
Physical
Size (L x Ø)
* 2000 x 4 mm / 78.8 x 0.16 inch (cable only) * 2000 x 12 mm / 78.8 x 0.47 inch (cable with connectors)
Weight
37 g / 1.31 oz
Mounting
Attach to Shelly Flood Gen4, Leak Sensor Cable or Extension Cable
Shell material
Conductive polymer and insulated polymer
Shell color
Black and white
Identifiers
SKU
SHE-ACC-0005

Common questions

Quick answers before you buy. We test this gear ourselves. Can't find yours? Ask our Melbourne team

Not to get started. The Flood Gen4 comes with a cable in the box. Buy this one to extend the run, to cover a second area, or as a replacement.

Each cable is two metres, and they chain together. Shelly rates a chained run to 150 metres.

The Shelly Flood Gen4. It isn't compatible with the Flood S Gen4, which senses through pads on its base and has no cable connection.

No. It has no electronics of its own. It plugs into the Flood Gen4 or another cable and works straight away.

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