Centralite 3-Series Water Sensor vs Heiman Smart Water Leakage Sensor

Updated September 2026

Data from Amazon and official Centralite and Heiman sites.

2026 verdict

Wi-Fi with a horn versus Zigbee with a thermometer.

Winner

Heiman Smart Water Leakage Sensor

$15.99$19.9920% OFF

Buy on Amazon USA

The Heiman Smart Water Leakage Sensor wins this water leak sensor comparison on price, IP67 sealing, a 5-year battery, and both a local siren and a status light. The Centralite 3-Series Water Sensor keeps temperature and freeze alerts plus native SmartThings on Zigbee, with no weather rating and no on-device alarm. Heiman talks Home Assistant over 2.4 GHz Wi-Fi and only partially to SmartThings. Pick the Heiman Smart Water Leakage Sensor for a loud, sealed, long-life detector; pick the Centralite 3-Series Water Sensor when freeze sensing on Zigbee is the job.

Centralite

Centralite 3-Series Water Sensor

$19.95

Buy on Amazon USA

Winner

Heiman

Heiman Smart Water Leakage Sensor

20% OFF

$15.99

$19.99

Buy on Amazon USA Buy on Amazon Canada

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Feature	Centralite 3-Series Water Sensor	Heiman Smart Water Leakage Sensor	Winner
Price	$19.95	$15.99	Heiman Smart Water Leakage Sensor
Rating	3.8	4.2	Heiman Smart Water Leakage Sensor
Weather Resistance	NO	IP67	Heiman Smart Water Leakage Sensor
Battery Life	3 years	5 years	Heiman Smart Water Leakage Sensor
Sensors	Water Leak, Temperature	Water Leak	Centralite 3-Series Water Sensor
Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts	Water Leak Alerts, Low Battery Alerts	Centralite 3-Series Water Sensor
On Device Alert Sound	NO	YES	Heiman Smart Water Leakage Sensor
On Device Alert Light	NO	YES	Heiman Smart Water Leakage Sensor
Warranty	1 year	1 year	Tie
Connectivity	Zigbee	2.4 GHz WiFi	Tie
Integrations	Samsung SmartThings, Home Assistant	Samsung SmartThings, Home Assistant	Tie

Centralite

Centralite 3-Series Water Sensor

$19.95

Buy on Amazon USA

+ Sensors: Water Leak, Temperature
+ Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts
- Price: $19.95 vs $15.99
- Rating: 3.8 vs 4.2

Winner

Heiman

Heiman Smart Water Leakage Sensor

20% OFF

$15.99

$19.99

Buy on Amazon USA Buy on Amazon Canada

+ Price: $15.99
+ Rating: 4.2
+ Weather Resistance: IP67
- Sensors: Water Leak vs Water Leak, Temperature
- Alerts: Water Leak Alerts, Low Battery Alerts vs Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts

Frequently Asked Questions

Which is better overall, the Centralite 3-Series Water Sensor or the Heiman Smart Water Leakage Sensor?

The Heiman Smart Water Leakage Sensor wins overall on price, IP67 sealing, a 5-year battery, and a local siren plus status light. The Centralite 3-Series Water Sensor wins on temperature and freeze alerts plus native SmartThings.

What is the biggest difference between these two?

The Heiman Smart Water Leakage Sensor is a hub-free Wi-Fi leak alarm with a local siren. The Centralite 3-Series Water Sensor is a silent Zigbee leak-and-freeze puck for SmartThings and Home Assistant.

Does Heiman detect freeze?

No. The Heiman Smart Water Leakage Sensor is leak-only. The Centralite 3-Series Water Sensor includes temperature and freeze alerts.

Which battery lasts longer?

The Heiman Smart Water Leakage Sensor is rated for about 5 years on a CR123A cell. The Centralite 3-Series Water Sensor is rated for about 3 years on a CR2 cell.

Who should buy the Heiman Smart Water Leakage Sensor?

Anyone who wants a sealed Wi-Fi leak detector with a local siren, a status light, and a long-life battery, especially on Home Assistant.

Who should buy the Centralite 3-Series Water Sensor?

Zigbee SmartThings or Home Assistant users who need leak plus freeze alerts rather than a local horn.

Full comparison table

Compare all 32 Water Leak Sensors side by side

You are looking at two of them. The full table lines up all Water Leak Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.