Shelly Flood Gen4 vs Switchbot Water Leak Detector (Sensor Cable Edition) comparison

Updated July 2026

Data from Amazon and official Shelly and SwitchBot sites.

2026 verdict

Both of these water leak sensors ship with an extendable sensor cable, but the Shelly Flood Gen4 still comes out on top, carrying a longer warranty and wider connectivity and sensor support that stretches to Zigbee and Matter beyond WiFi and Bluetooth. The Switchbot Water Leak Detector (Sensor Cable Edition) answers with a lower price and better weather resistance, keeping it the leaner, more affordable choice. Pick the Shelly Flood Gen4 if the longer warranty and broader protocol support are worth paying for; choose the Switchbot Water Leak Detector (Sensor Cable Edition) if price and weatherproofing matter more.

Feature	Shelly Flood Gen4	Switchbot Water Leak Detector (Sensor Cable Edition)	Winner
Price	$39.99	$16.99	Switchbot Water Leak Detector (Sensor Cable Edition)
Rating	4.2	4.3	Switchbot Water Leak Detector (Sensor Cable Edition)
Warranty	3 years	1 year	Shelly Flood Gen4
Weather Resistance	IP44	IP67	Switchbot Water Leak Detector (Sensor Cable Edition)
Connectivity	2.4 GHz WiFi, Bluetooth, Zigbee	2.4 GHz WiFi, Bluetooth	Shelly Flood Gen4
Sensors	Water Leak, Temperature	Water Leak	Shelly Flood Gen4
Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts	Water Leak Alerts	Shelly Flood Gen4
Battery Life	2 years	2 years	Tie
Integrations	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, IFTTT	Tie
On Device Alert Sound	YES	YES	Tie
On Device Alert Light	YES	YES	Tie

Winner

Shelly

Shelly Flood Gen4

$39.99

Buy on Amazon USA

+ Warranty: 3 years
+ Connectivity: 2.4 GHz WiFi, Bluetooth, Zigbee
+ Sensors: Water Leak, Temperature
- Price: $39.99 vs $16.99
- Rating: 4.2 vs 4.3

SwitchBot

Switchbot Water Leak Detector (Sensor Cable Edition)

15% OFF

$16.99

$19.99

Buy on Amazon USA

+ Price: $16.99
+ Rating: 4.3
+ Weather Resistance: IP67
- Warranty: 1 year vs 3 years
- Connectivity: 2.4 GHz WiFi, Bluetooth vs 2.4 GHz WiFi, Bluetooth, Zigbee

Frequently Asked Questions

Which is better overall: Shelly Flood Gen4 or Switchbot Water Leak Detector (Sensor Cable Edition)?

The Shelly Flood Gen4 wins overall thanks to a longer warranty and wider connectivity and sensor support. The Switchbot Water Leak Detector (Sensor Cable Edition) is the cheaper, more weather-resistant option.

What is the biggest difference between the Shelly Flood Gen4 and the Switchbot Water Leak Detector (Sensor Cable Edition)?

Protocol depth versus price. The Shelly Flood Gen4 adds Zigbee and Matter alongside WiFi and Bluetooth, plus a longer warranty, while the Switchbot Water Leak Detector (Sensor Cable Edition) costs less and is more weather resistant.

Do both include an extendable sensor cable?

Yes, both the Shelly Flood Gen4 and the Switchbot Water Leak Detector (Sensor Cable Edition) ship with an extendable sensor cable for reaching tighter or secondary spots.

Which one is more weather resistant?

The Switchbot Water Leak Detector (Sensor Cable Edition) carries the stronger weather-resistance rating of the two.

Who should buy the Shelly Flood Gen4?

Buyers who want the longer warranty and the broadest connectivity, including Zigbee and Matter support.

Who should buy the Switchbot Water Leak Detector (Sensor Cable Edition)?

Buyers who want the cheaper, more weather-resistant cable-equipped sensor and don't need Zigbee or Matter.

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