
Option 1 · YoLink
YoLink FlowSmart All-in-One Water Meter & Shutoff
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 · YoLink
Last updated October 2026
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Option 2 · YoLink
Last updated October 2026
View full device profileWhat the catalog tells us
These counts describe the available data, not a quality score. More features do not automatically make a better device.
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Compare the stated test conditions. Catalog battery figures alone do not predict runtime in your home.
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Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.
Showing 26 of 26 rows. “Not recorded” does not mean “No”.
The manual states the device reaches the internet through a YoLink hub and does not connect directly to Wi-Fi.
Uses the YoLink LoRa protocol, rated up to 1/4 mile in open air. A YoLink hub with an internet connection is required for the app and remote alerts.
Up to 1/4 mile in open air to the YoLink hub.
Schedules, app control and automations with YoLink leak sensors and other devices.
YoLink lists Alexa among the platforms this device works with, set up in the YoLink app under Settings, Third-Party Integrations.
YoLink's compatibility list for the valve controllers is Alexa, Google, IFTTT and Home Assistant, with no Apple Home path.
YoLink lists Home Assistant for this device. The official Home Assistant YoLink integration covers the previous model of the same product (YS5008-UC, FlowSmart All-in-One).
The official Home Assistant YoLink integration lists this controller as YS5003-UC (Water Valve Controller 2).
SmartThings is not on YoLink's compatibility list for this product.
The device measures water flow and usage.
YoLink FlowSmart All-in-One Water Meter & Shutoff manufacturer product page →The cited listing is the 3/4-inch pipe variant. It does not verify fit for every size in the broader catalog entry.
Document check only; not a hands-on test or verification of every regional or firmware variant.
The ultrasonic meter reports the meter reading, water usage per day, per month and per use, and the water temperature.
Sends freeze warnings, and the app sets a high and low water temperature alert range.
The leak threshold, maximum usage and maximum duration per use are set on the device with an optional auto shutoff, and schedules and timers run on the device with no internet. YoLink also states automatic shutoff keeps working during internet or power outages.
Once paired device-to-device, a YoLink water leak sensor closes the valve directly over LoRa, with no internet, no app and no AC power; the hub and internet are only needed for the app and notifications.
When the controller runs on its adapter, the four AA batteries stay in as backup during a power outage.
YoLink states up to 10 years of battery life for its actuators and sensors with the Device-to-Device and Radio Wake-Up technologies.
YoLink quotes 2+ years between battery changes in battery-only mode.
Non-rechargeable lithium battery, included. Replacing it means opening the battery cover and reconnecting the battery wires.
Runs on a built-in 3.6 V lithium battery and has no AC adapter.
The controller can run from the included plug-in 12 V adapter instead of, or together with, its batteries.
Ultrasonic meter and motorized ball valve in one body that is plumbed into the pipe with female NPT fittings.
Sold as separate 1/2" (YS5018-15), 3/4" (YS5018-20, this listing), 1" (YS5018-25), 1-1/4", 1-1/2" and 2" models (DN15 to DN50).
YoLink recommends the EVO for ball valves of 1/2", 3/4", 1", 1-1/4", 1-1/2" and 2", attached directly to the valve shaft with a direct-drive adapter; it installs in about 15 minutes with a Phillips screwdriver and also fits PVC ball valves once the handle is removed.
The Valve Maintenance function cycles the valve on a weekly or monthly schedule set in the app, and it can be disabled.
| Specification | YoLink FlowSmart All-in-One Water Meter & Shutoff | YoLink Valve Controller 2 with EVO Valve Operator |
|---|---|---|
| Connectivity | ||
NoCatalog noteThe manual states the device reaches the internet through a YoLink hub and does not connect directly to Wi-Fi. | No | |
| No | No | |
LoRa (YoLink hub required)Catalog noteUses the YoLink LoRa protocol, rated up to 1/4 mile in open air. A YoLink hub with an internet connection is required for the app and remote alerts. | LoRa (YoLink hub required)Catalog noteUp to 1/4 mile in open air to the YoLink hub. | |
| No | No | |
| No | No | |
| No | No | |
| Features | ||
| Yes | YesCatalog noteSchedules, app control and automations with YoLink leak sensors and other devices. | |
| Integrations | ||
YesCatalog noteYoLink lists Alexa among the platforms this device works with, set up in the YoLink app under Settings, Third-Party Integrations. | YoLink Hub required | |
| No | NoCatalog noteYoLink's compatibility list for the valve controllers is Alexa, Google, IFTTT and Home Assistant, with no Apple Home path. | |
| No | YoLink Hub required | |
YesCatalog noteYoLink lists Home Assistant for this device. The official Home Assistant YoLink integration covers the previous model of the same product (YS5008-UC, FlowSmart All-in-One). | YesCatalog noteThe official Home Assistant YoLink integration lists this controller as YS5003-UC (Water Valve Controller 2). | |
| No | No | |
| No | NoCatalog noteSmartThings is not on YoLink's compatibility list for this product. | |
| Leak Protection | ||
YesManufacturer sourceThe device measures water flow and usage. YoLink FlowSmart All-in-One Water Meter & Shutoff manufacturer product page →
The cited listing is the 3/4-inch pipe variant. It does not verify fit for every size in the broader catalog entry. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog noteThe ultrasonic meter reports the meter reading, water usage per day, per month and per use, and the water temperature. | No | |
YesCatalog noteSends freeze warnings, and the app sets a high and low water temperature alert range. | No | |
| No | No | |
YesCatalog noteThe leak threshold, maximum usage and maximum duration per use are set on the device with an optional auto shutoff, and schedules and timers run on the device with no internet. YoLink also states automatic shutoff keeps working during internet or power outages. | YesCatalog noteOnce paired device-to-device, a YoLink water leak sensor closes the valve directly over LoRa, with no internet, no app and no AC power; the hub and internet are only needed for the app and notifications. | |
| No | No | |
| Power | ||
| Not applicable / unspecified | YesCatalog noteWhen the controller runs on its adapter, the four AA batteries stay in as backup during a power outage. | |
10 yearsCatalog noteYoLink states up to 10 years of battery life for its actuators and sensors with the Device-to-Device and Radio Wake-Up technologies. | 2 yearsCatalog noteYoLink quotes 2+ years between battery changes in battery-only mode. | |
3.6V lithium 19000mAhCatalog noteNon-rechargeable lithium battery, included. Replacing it means opening the battery cover and reconnecting the battery wires. | 4x AA | |
NoCatalog noteRuns on a built-in 3.6 V lithium battery and has no AC adapter. | YesCatalog noteThe controller can run from the included plug-in 12 V adapter instead of, or together with, its batteries. | |
| Valve | ||
Inline valveCatalog noteUltrasonic meter and motorized ball valve in one body that is plumbed into the pipe with female NPT fittings. | Retrofit actuator | |
| Not applicable / unspecified | Not recorded | |
1/2", 3/4", 1", 1-1/4", 1-1/2", 2"Catalog noteSold as separate 1/2" (YS5018-15), 3/4" (YS5018-20, this listing), 1" (YS5018-25), 1-1/4", 1-1/2" and 2" models (DN15 to DN50). | 1/2" to 2"Catalog noteYoLink recommends the EVO for ball valves of 1/2", 3/4", 1", 1-1/4", 1-1/2" and 2", attached directly to the valve shaft with a direct-drive adapter; it installs in about 15 minutes with a Phillips screwdriver and also fits PVC ball valves once the handle is removed. | |
YesCatalog noteThe Valve Maintenance function cycles the valve on a weekly or monthly schedule set in the app, and it can be disabled. | Not recorded | |
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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