
Option 1 · First Alert
First Alert L5 WiFi Water Leak Shutoff Valve
Last updated October 2026
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A summary of selected recorded differences between these water shutoff valves. Check the full specification table below for details and conditions.
These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.
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Option 1 · First Alert
Last updated October 2026
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Option 2 · Zooz
Last updated October 2026
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These counts describe the available data, not a quality score. More features do not automatically make a better device.
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Showing 26 of 26 rows. “Not recorded” does not mean “No”.
802.11 b/g/n at 2.4 GHz.
Bluetooth 4.1; a long press of the power button starts Bluetooth broadcasting for setup.
Z-Wave 700 series with Z-Wave Long Range (version 2.0 of the ZAC36), S2 Authenticated security and SmartStart. It controls remotely only through a Z-Wave hub, and the wired leak probe works with no hub at all.
Up to 30 First Alert WiFi leak detectors can be paired, and you choose which of them trigger the automatic shutoff in the app's Leak Protection settings.
Closes automatically when a paired Z-Wave leak sensor reports water, through the hub's automations.
The manufacturer documents control only through the First Alert app; no third-party platform is claimed.
Zooz says Alexa speakers have no Z-Wave radio and reach Z-Wave devices through a compatible hub such as SmartThings or Hubitat.
The manufacturer documents control only through the First Alert app; no third-party platform is claimed.
The manufacturer documents control only through the First Alert app; no third-party platform is claimed.
Zooz says Google speakers have no Z-Wave radio and reach Z-Wave devices through a compatible hub such as SmartThings or Hubitat.
The Z-Wave JS device database lists the ZAC36 (Zooz Titan Water Valve Actuator) and Zooz lists Home Assistant among its compatible hubs.
The specifications list Wi-Fi 2.4 GHz and Bluetooth 4.1 only, with no Matter support.
The manufacturer documents control only through the First Alert app; no third-party platform is claimed.
Zooz lists SmartThings as a compatible hub and publishes an Edge driver for the ZAC36.
The valve has no temperature sensor of its own; freeze monitoring comes from a First Alert L1 WiFi Water Leak and Freeze Detector paired with it.
A built-in temperature sensor (-40 to 257 F) can trigger custom alerts and automations when temperatures drop near freezing.
The included wired leak probe closes the valve even if the hub or all wireless communication is down, so it works as a standalone leak stop.
Includes a 5 ft sensing cable plugged into the actuator that shuts the water off when it detects a leak; more cables can be linked to extend coverage to 500 ft.
Includes a 4.75 ft wired water probe on a 3.5 mm input, extendable with a headphone-type extension cable. After a leak the valve stays closed until you press the button.
No battery is listed. During a power outage the manual says to unplug the actuator and use its emergency handle; that handle does not sync the valve state with the app.
Zooz sells an optional backup battery pack (smart power bank) that keeps the Titan powered during an outage and shuts the valve off before the battery runs dry.
Powered by a 15 V adapter (100-240 V input) with a 10 ft cord.
Runs on the included 12 V DC, 1 A power supply (ETL certified) with a 9.5 ft cord. If power is lost the actuator stays in its last position.
Ships with a lead-free NPT ball valve that is plumbed into the main line, after the main shutoff and the pressure reducing valve; the actuator then clips onto it.
Rated torque 5 N·m (44.25 in-lbs), breakaway torque 6.5 N·m, runtime under 10 seconds for a 90 degree turn.
Zooz states 6 N·m, and says it stress-tested the actuator for more than 20,000 actions at 8 N·m of resistance. A normal valve needs about 1.5 to 3.5 N·m.
Sold as VWS02Y-1/2, VWS02Y-3/4, VWS02Y-1 and VWS02Y-11/4, each with its own NPT ball valve.
Quarter-turn ball valves only, not gate valves or 180 degree valves, and not CPVC pipe. It needs 3 in of clearance each side of the valve center, 1.25 in between the handle and the pipe and 1 in between the pipe and the wall.
A configurable maintenance cycle closes and reopens the valve on a schedule; First Alert recommends at least every 2 months. It does not run while the valve is closed.
Check-in mode turns the valve about 1/8 of a turn on a schedule you set with the Auto Test parameter (every 30 days, for example) to confirm it still moves.
| Specification | First Alert L5 WiFi Water Leak Shutoff Valve | Zooz ZAC36 LR Titan Water Valve Actuator |
|---|---|---|
| Connectivity | ||
YesCatalog note802.11 b/g/n at 2.4 GHz. | No | |
YesCatalog noteBluetooth 4.1; a long press of the power button starts Bluetooth broadcasting for setup. | No | |
| No | No | |
| No | No | |
| No | Z-Wave Hub requiredCatalog noteZ-Wave 700 series with Z-Wave Long Range (version 2.0 of the ZAC36), S2 Authenticated security and SmartStart. It controls remotely only through a Z-Wave hub, and the wired leak probe works with no hub at all. | |
| No | No | |
| Features | ||
YesCatalog noteUp to 30 First Alert WiFi leak detectors can be paired, and you choose which of them trigger the automatic shutoff in the app's Leak Protection settings. | YesCatalog noteCloses automatically when a paired Z-Wave leak sensor reports water, through the hub's automations. | |
| Integrations | ||
NoCatalog noteThe manufacturer documents control only through the First Alert app; no third-party platform is claimed. | Z-Wave Hub requiredCatalog noteZooz says Alexa speakers have no Z-Wave radio and reach Z-Wave devices through a compatible hub such as SmartThings or Hubitat. | |
NoCatalog noteThe manufacturer documents control only through the First Alert app; no third-party platform is claimed. | No | |
NoCatalog noteThe manufacturer documents control only through the First Alert app; no third-party platform is claimed. | Z-Wave Hub requiredCatalog noteZooz says Google speakers have no Z-Wave radio and reach Z-Wave devices through a compatible hub such as SmartThings or Hubitat. | |
| Not recorded | YesCatalog noteThe Z-Wave JS device database lists the ZAC36 (Zooz Titan Water Valve Actuator) and Zooz lists Home Assistant among its compatible hubs. | |
NoCatalog noteThe specifications list Wi-Fi 2.4 GHz and Bluetooth 4.1 only, with no Matter support. | No | |
NoCatalog noteThe manufacturer documents control only through the First Alert app; no third-party platform is claimed. | YesCatalog noteZooz lists SmartThings as a compatible hub and publishes an Edge driver for the ZAC36. | |
| Leak Protection | ||
| No | No | |
Sold separatelyCatalog noteThe valve has no temperature sensor of its own; freeze monitoring comes from a First Alert L1 WiFi Water Leak and Freeze Detector paired with it. | YesCatalog noteA built-in temperature sensor (-40 to 257 F) can trigger custom alerts and automations when temperatures drop near freezing. | |
| No | No | |
| Not recorded | YesCatalog noteThe included wired leak probe closes the valve even if the hub or all wireless communication is down, so it works as a standalone leak stop. | |
YesCatalog noteIncludes a 5 ft sensing cable plugged into the actuator that shuts the water off when it detects a leak; more cables can be linked to extend coverage to 500 ft. | YesCatalog noteIncludes a 4.75 ft wired water probe on a 3.5 mm input, extendable with a headphone-type extension cable. After a leak the valve stays closed until you press the button. | |
| Power | ||
NoCatalog noteNo battery is listed. During a power outage the manual says to unplug the actuator and use its emergency handle; that handle does not sync the valve state with the app. | Sold separatelyCatalog noteZooz sells an optional backup battery pack (smart power bank) that keeps the Titan powered during an outage and shuts the valve off before the battery runs dry. | |
| Not applicable / unspecified | Not applicable / unspecified | |
| Not applicable / unspecified | Not applicable / unspecified | |
YesCatalog notePowered by a 15 V adapter (100-240 V input) with a 10 ft cord. | YesCatalog noteRuns on the included 12 V DC, 1 A power supply (ETL certified) with a 9.5 ft cord. If power is lost the actuator stays in its last position. | |
| Valve | ||
Inline valveCatalog noteShips with a lead-free NPT ball valve that is plumbed into the main line, after the main shutoff and the pressure reducing valve; the actuator then clips onto it. | Retrofit actuator | |
5 N·mCatalog noteRated torque 5 N·m (44.25 in-lbs), breakaway torque 6.5 N·m, runtime under 10 seconds for a 90 degree turn. | 6 N·mCatalog noteZooz states 6 N·m, and says it stress-tested the actuator for more than 20,000 actions at 8 N·m of resistance. A normal valve needs about 1.5 to 3.5 N·m. | |
1/2", 3/4", 1", 1-1/4"Catalog noteSold as VWS02Y-1/2, VWS02Y-3/4, VWS02Y-1 and VWS02Y-11/4, each with its own NPT ball valve. | 1/2" to 1-1/4"Catalog noteQuarter-turn ball valves only, not gate valves or 180 degree valves, and not CPVC pipe. It needs 3 in of clearance each side of the valve center, 1.25 in between the handle and the pipe and 1 in between the pipe and the wall. | |
YesCatalog noteA configurable maintenance cycle closes and reopens the valve on a schedule; First Alert recommends at least every 2 months. It does not run while the valve is closed. | YesCatalog noteCheck-in mode turns the valve about 1/8 of a turn on a schedule you set with the Auto Test parameter (every 30 days, for example) to confirm it still moves. | |
The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.
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