£0.00
NetXL Logo
Hello! Log InYourAccount
  • Networking
  • Antennas
  • CCTV
  • Smart Home & Security
  • Speakers
  • VoIP
  • Accessories
  • Brands
  • Bundles
  • Reduced
Help & SupportExpress ShippingTrade Account
Explore
  • Brands A-Z
  • Categories
  • Reduced & Clearance
  • Bundles
Trade
  • Apply for Trade Account
  • Trade Account Benefits
  • API
More from NetXL
  • About Us
  • Blog
  • News
  • Careers
Terms
  • Terms & Conditions
  • Privacy Policy
Help & Support
  • Contact Us
  • FAQs
  • Delivery Policy
  • Returns
Apple Pay acceptedGoogle Pay accepted

Unit 4, Riverside Business Park, Walnut Tree Close, Guildford, Surrey, GU1 4UG

Registered in England & Wales. Company No: 13500507 VAT No: GB 386 0823 76

Copyright © 2025 NetXL Distribution Ltd, All rights reserved.

Want it by tomorrow? Order within 12 hours 52 minutes and choose DPD Next Working Day delivery at checkout for next day delivery.

Home
Shelly
Shelly Flood Gen4 WiFi-Operated Smart Flood Sensor
SHELLY-FLOOD-GEN4-1

Click to zoom

SHELLY-FLOOD-GEN4-1

Shelly Flood Gen4 WiFi-Operated Smart Flood Sensor

Part Number: SHELLY-FLOOD-GEN4

£33.52inc VAT
£27.93ex VAT

180 In Stock

Want it by tomorrow? Order within 12 hours 52 minutes and choose DPD Next Working Day delivery at checkout for next day delivery.

Easy Returns

Bulk Pricing

  • 1+

    £33.52

  • 5+

    £33.52

  • 10+

    £33.52

The Shelly Flood Gen4 is a flood and moisture detector, designed to provide full-room water detection across an entire area. The Flood Gen4 features a moisture-detecting cable attached to a battery pack in an IPX4 water-resistant casing, and can be installed along walls, underneath equipment and in hard-to-reach spots to cover an entire area with reliable moisture detection.

Description

Unlike traditional leak detectors such as the previous Shelly Flood which can only detect leaks in a single zone, the Shelly Flood Gen4 includes a moisture-detecting flexible cable that can be stretched to cover a wide area, or be installed in cramped areas like behind furniture, inside cabinets or along the length of a wall. To extend the detection range, cables can be easily connected together with a simple 3.5mm jack up to a length of 150m, making it easy to cover entire rooms, corridors, data cabinets and more. Once moisture is detected, a buzzer sounds and a notification is sent immediately to the connected Shelly app notifying users of a leak. The connected battery pack houses 4 x AA batteries, and is encased in an IPX4 casing.

The Flood Gen4 features three different moisture-detecting profiles for adaptability and ease-of-use: a profile for everyday peace of mind, a more sensitive setting for protecting high-priority and especially moisture-sensitive assets, and a battery-saving setting which disables the buzzer - ideal for holiday homes and other rarely-used spaces.

As a part of the new Gen4 family, the Shelly Flood Gen4 is compatible out of the box with WiFi, Bluetooth, Zigbee and Matter and can maintain these connections simultaneously to quickly and seamlessly integrate with both a wider Shelly ecosystem and pre-existing ZIgbee and Matter installations.

Key Highlights

  • Built-in WiFi - no hub required
  • Bluetooth connectivity
  • Embedded web server for local management
  • Smart schedules
  • Smart scenes

What’s in the box?

  • 1 x SHELLY-FLOOD-GEN4
  • 1 x Installation Guide

You might also like

usl-environmental-1

Ubiquiti USL Environmental Sensor

£47.99inc VAT

More by Shelly

SHELLY-BLU-HT-GEN3-ZB-BLACK-1

Shelly BLU ZB Gen3 H&T Sensor Black

RRP£14.96inc VAT
shelly/shelly-shelly-blu-motion-11

Shelly BLU Bluetooth Motion Sensor

RRP£16.49inc VAT
shelly-blu-door-window-sensor-white-1

Shelly BLU Door/Window Sensor ZB White

Coming soon

shelly/shelly-shelly-blue-door-window-sensor-black-13

Shelly BLU Door/Window Sensor Black

RRP£13.30inc VAT
SHELLY-BLU-HT-GEN3-ZB-MOCHA-1

Shelly BLU ZB Gen3 H&T Sensor Mocha

RRP£14.96inc VAT
SHELLY-BLU-HT-GEN3-ZB-IVORY-1

Shelly BLU ZB Gen3 H&T Sensor Ivory

RRP£14.96inc VAT
New
shelly/shelly-h-t-white-20

Shelly H&T Heat and Humidity Sensor

RRP£30.31inc VAT
New
shelly/shelly-h-t-black-10

Shelly H&T Heat/Humidity Sensor Black

RRP£30.31inc VAT

Latest Tech News

Read Blog
What is TP-Link Omada? The Business Network Solution Explained
NetXL 20 May 2026 | 5 min readWhat is TP-Link Omada? The Business Network Solution Explained

See how Omada simplifies business networking with seamless WiFi roaming, centralised cloud management and scalable SDN infrastructure.

DECT vs WiFi: Are Grandstream WP Series Phones Better for Mobile Business Communication?
NetXL 13 May 2026 | 5 min readDECT vs WiFi: Are Grandstream WP Series Phones Better for Mobile Business Communication?

Discover how Grandstream’s WP Series combines WiFi 6, VoIP and Android mobility features to deliver flexible business communication beyond traditional DECT systems.

Why do calls still drop on a fast internet connection?
NetXL 21 Apr 2026 | 5 min readWhy do calls still drop on a fast internet connection?

Exploring how TP-Link solutions improve call quality and network performance

Is the Grandstream GDS372x Series the Best IP Video Door Station for Modern Access Control?
NetXL 30 Mar 2026 | 5 min readIs the Grandstream GDS372x Series the Best IP Video Door Station for Modern Access Control?

Breaking down the Grandstream GDS372x Series, from features and access options to where it makes the most sense.

Why Should You Become A Certified Shelly Installer?
NetXL 30 Mar 2026 | 5 min readWhy Should You Become A Certified Shelly Installer?

Hands-on training, expert guidance, and perks that make your smart home projects stand out!

Why Does Your Router Matter More Than Internet Speed? | DrayTek Vigor 2767 Guide
NetXL 27 Mar 2026 | 5 min readWhy Does Your Router Matter More Than Internet Speed? | DrayTek Vigor 2767 Guide

A practical guide to improving network performance, security, and reliability with the DrayTek Vigor 2767 Series

Understanding TP-Link's WiFi 7 Devices
NetXL 26 Mar 2026 | 5 min readUnderstanding TP-Link's WiFi 7 Devices

A detailed guide to TP-Link’s WiFi 7 range for every home, office, or lifestyle.

Understanding WiFi 7 in Hospitality
NetXL 26 Mar 2026 | 5 min readUnderstanding WiFi 7 in Hospitality

Next-Level WiFi For Every Guest and Space