# Setting up YoLink sensors

Connect your YoLink hub and sensors with a UAID and Secret Key from the YoLink app. Mays then reads fridge temperatures, doors, leaks and power failures, alerts your managers, prompts a lone worker about breaks, and shows door activity next to punches.

For: Admins, Managers · On: Web · [Help Center](https://www.mays.app/help) › [Food safety & signage](https://www.mays.app/help/food-safety-devices) · Last updated October 29, 2026 · Mays Team

Connect your YoLink hub and sensors with a UAID and Secret Key from the YoLink app. Mays then reads fridge temperatures, doors, leaks and power failures, and puts each sensor at a location. Because Mays knows who is clocked in, a door opening becomes meaningful: an after-hours entry, a door left open with nobody there, or someone stepping out on a break.

**Who:** admins connect YoLink for the whole organization. Managers connect YoLink for the locations they manage, for example when each store buys and runs its own sensors. **Plan:** YoLink sensors are part of the same **Pro** plan feature as Thermometers; at a location whose plan doesn't include it, Mays doesn't read them or raise alerts. The sensors and hub are bought separately.

## What you need

- A **YoLink hub** (YoLink Hub or SpeakerHub) that is online. The sensors talk to the hub, and the hub talks to YoLink.
- **YoLink sensors** added to that hub in the YoLink app: temperature and humidity sensors, door sensors, water leak sensors and power failure alarms.
- The **YoLink** app on your phone, signed in to the YoLink account the sensors are on.

## Get your UAID and Secret Key

1. Open the YoLink app.
2. Go to **Account → Advanced Settings → Personal Access Credentials**.
3. Tap **+**.
4. Copy the **UAID** and **Secret Key** into Mays (next section).

Treat the Secret Key like a password. Mays asks for it only when you connect, never shows it again, and deletes it when the account is disconnected.

## Connect: admins and managers

### Admins

1. On the web, go to **Integrations**.
2. On **YoLink Sensors**, click **Connect** (**Connect Another Location** once a YoLink account is connected).
3. Paste the **UAID** and the **Secret Key**.
4. Under **Put new sensors at**, pick the location the sensors are at, or leave **Don't assign yet** to give each sensor a location yourself.
5. Add a **Label (optional)**, such as the store it's for.
6. Click **Connect YoLink**.

![The Integrations page for an admin: under Connected, a YoLink Sensors card for North store at North with 1 branch, the sync and delete icons and Configure; under Add Integration, 7shifts, Square, Clover, Union POS, Govee Thermometers and YoLink Sensors (1 connected) with a Connect Another Location button](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__01-integrations-yolink.a90f9036e4.png)

![The Connect YoLink sensors window for an admin: the four steps to create a Personal Access Credential in the YoLink app, empty UAID and Secret Key boxes, Put new sensors at set to North, the Label North store, and the Connect YoLink button](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__02-connect-yolink-admin.1c3e279fc7.png)

### Managers

Managers connect YoLink for the locations they manage.

1. On the web, go to **Integrations**.
2. Under **YoLink sensors for my locations**, click **Connect YoLink**.
3. Paste the **UAID** and the **Secret Key**.
4. Pick the **Location** the sensors are at. It's required, and only your own locations are listed. If you manage one location, it's already picked.
5. Add a **Label (optional)** and click **Connect YoLink**.

![The Connect YoLink sensors window for a manager: the steps in the YoLink app, empty UAID and Secret Key boxes, the required Location already set to North with the note New sensors on this YoLink account appear at this location, an optional Label, and the Connect YoLink button](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__04-connect-yolink-manager.a92af40cbe.png)

The YoLink accounts connected for your locations are listed under **YoLink sensors for my locations**, with the locations they're for.

![A manager's Integrations page: Square for my locations and Clover for my locations with North Not connected, Govee thermometers for my locations with no account yet, and YoLink sensors for my locations with the Connect YoLink button, the account North store, Connected · North, with Disconnect, and an earlier North store account, Disconnected · history kept](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__03-manager-integrations.2cd1772179.png)

### What happens next

Mays checks the credentials with YoLink straight away. If YoLink doesn't accept them, the window says so and nothing is saved. If they work, the window closes and the sensors on that YoLink account appear a moment later, at the location picked when you connected.

![The Connect YoLink sensors window after YoLink refused the credentials: the UAID and Secret Key filled in, Location North, the Label North store, and in red: YoLink didn't accept that UAID and Secret Key. Check them in the YoLink app (Account → Advanced Settings → Personal Access Credentials).](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__05-connect-refused.088b4a3f2f.png)

The location is only used for sensors Mays hasn't seen before. Sensors already in Mays keep their location, name and settings.

**Connecting a YoLink account that's already in Mays:**

- **Admins:** connecting it again links it to the location you pick too. It doesn't move anyone's sensors.
- **Managers:** you can reconnect a YoLink account that was connected for your own locations. If an admin connected it, or another location's manager did, Mays says *This YoLink account is managed by someone else. Ask an admin to put its sensors at your location.* and nothing changes.

**Several YoLink accounts?** Connect again with the other UAID and Secret Key, for example one per store. Each account is listed separately on the **Integrations** page.

## Which devices Mays supports

| YoLink device | What Mays does with it |
| --- | --- |
| Temperature and humidity sensor | Becomes a thermometer under **Sensors → Temperature**, with a safe range and temperature alerts, like a Govee thermometer. |
| Door sensor | Listed under **Sensors → Doors & alarms**. Records when the door opens and closes, alerts when it opens after hours or is left open, and can prompt breaks. |
| Water leak sensor | Listed under **Sensors → Doors & alarms**. Alerts when it detects water. |
| Power failure alarm | Listed under **Sensors → Doors & alarms**. Alerts when the power goes out. |
| Hub and SpeakerHub | Used to reach the sensors. They don't appear as sensors. |

![The Temperature tab under Sensors: the YoLink Walk-in cooler at North, range 32°F – 40°F, alert after 15 min, model YS8003-UC, reading 46.4°F (8.0°C) in orange with a warning icon, and North marked 1 out of range](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__06-temperature-yolink.bc01730f24.png)

**Not supported yet:** any other YoLink device, such as motion, vibration, siren, lock, outlet or plug devices. Mays doesn't read or control them, and they keep working in the YoLink app as before. **Doors & alarms** lists them under **Not supported yet**, with their YoLink device type. Admins see the devices on every account; managers see those on the accounts they connected. Mays also alerts when a supported sensor's battery runs low or it stops reporting.

## Where new sensors land

New sensors appear at the location picked when YoLink was connected. If no location was picked (**Don't assign yet**), they appear **Unassigned**, and only admins see them. A sensor that isn't assigned to a location still records, but it never raises an alert.

Sensors you add to the YoLink account later appear in Mays by themselves, within about half an hour, at the same location. **Sync now** on **Sensors → Doors & alarms** checks every YoLink account for new sensors straight away, including an account with only door, leak or power sensors. Admins sync every connected YoLink account. Managers sync the YoLink accounts connected for their locations; if there is none, they don't see **Sync now**. **Sync now** on the **Temperature** tab does the same for the accounts your thermometers are on, and for Govee. If YoLink can't be reached, a message says why.

Renaming a device in the YoLink app later doesn't change its name in Mays, and doesn't move it to another location.

## Doors & alarms

On the web, click **Sensors** in the sidebar. **Temperature** has your thermometers; **Doors & alarms** has the door, water leak and power sensors. Managers see the sensors at their own locations; admins see every location's.

Each sensor shows:

- **Name** and **Location** (or **Unassigned**).
- **Kind**: **Door**, **Water leak** or **Power**.
- **State**: **Open** or **Closed** for a door, **Leak** or **Dry** for a leak sensor, **Power out** or **OK** for a power failure alarm. **Offline** appears next to it when the sensor has stopped reporting. If the sensor's YoLink account is disconnected, **Disconnected** shows instead: its last state would be out of date.
- **Battery**: four bars, from full to empty (a dash while its account is disconnected).
- **Last event**: when it last reported something, on your own device's clock.

![Sensors → Doors & alarms for an admin: a warning that North has more than one position, then Back door (Closed, two battery bars), Kiosk door marked Entrance (Closed), Dish pit leak (Leak, in red) and Walk-in power (Power out, in red), each at North with History and Edit, and Lobby motion, MotionSensor · YS7804-UC, under Not supported yet](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__07-doors-and-alarms.c1a4b04aae.png)

Click **History** to see a sensor's latest events, newest first: opened, closed, water detected, power lost, stopped reporting and so on.

![The Kiosk door's History open under its row: Closed and Opened events newest first, from Oct 29, 2026, 12:06am back to Oct 28, 2026, 11:52pm](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__08-sensor-history.ad28d4ec52.png)

### Edit a sensor

Admins, and managers for the sensors at their locations, click **Edit**. Managers on a custom role need **Configure thresholds & alerts**.

- **Name** and **Location**. Only admins can set a sensor back to **— Unassigned —**.
- **Door role** (doors only): **Entrance** or **Other**. New doors start as **Other**. The after-hours alert, break prompts and the door activity on punches use the **Entrance** door only.
- **Alert when left open (minutes)** (doors only): 5 by default.
- **Wait for a clock-in before alerting (minutes)** (doors only): 10 by default. 0 alerts the moment the door opens with nobody clocked in.
- **Break prompts** (doors only): on by default.

Click **Save**. A leak sensor or power failure alarm only has a name and a location.

![Editing the Kiosk door: Name Kiosk door, Location North, Door role Entrance with the note that the entrance door gets the after-hours alert, break prompts and the door activity on punches, Alert when left open 5, Wait for a clock-in before alerting 10 with the note 0 alerts the moment the door opens with nobody clocked in, Break prompts ticked, and Cancel and Save](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__09-edit-door-sensor.d44dd61b25.png)

### The employee monitoring notice

Break prompts and the door activity on punches watch when people step out. The first time someone makes a door the **Entrance** with **Break prompts** on, or turns **Break prompts** on for an entrance door, Mays shows this notice for that location:

*Some states (e.g. NY, CT, DE) require telling employees about electronic monitoring. You're responsible for that notice.*

Click **I understand** to save the change. Mays keeps who acknowledged it and when, and doesn't ask again for that location. **Cancel** saves nothing. Until someone at the location acknowledges the notice, its door sends no break prompts and punches show no door activity.

![The Employee monitoring notice over the door editor: Some states (e.g. NY, CT, DE) require telling employees about electronic monitoring. You're responsible for that notice. You're asked once per location. Break prompts and the door activity on punches start after this. With Cancel and I understand](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__10-monitoring-notice.4ac7948a45.png)

## Alerts

Every alert is a rule under **Automation & AI**, added when you connect YoLink, with the name below. You can change who gets it, or pause it, like any rule; see [Automation triggers and actions](https://www.mays.app/help/ai-automation/automation-triggers-and-actions).

| Rule | When | What Mays does |
| --- | --- | --- |
| **Investigate temperature alert** | A YoLink thermometer stays outside its safe range. | A high-priority task, *Temperature alert: (thermometer) at (temperature)°F*, at its location, and a notification to whoever is scheduled to work at that time (otherwise the location's managers). See [Temperature thresholds and alerts](https://www.mays.app/help/food-safety-devices/temperature-alerts). |
| **Kiosk door opened after hours** | The entrance door opens while nobody is clocked in at its location, and nobody clocks in within the **Wait for a clock-in before alerting** minutes. | A high-priority task, *Kiosk door opened, nobody on shift*, and a notification to the location's managers. |
| **Door left open** | A door stays open longer than its **Alert when left open** minutes while nobody is clocked in at its location. An open door during a shift is normal. | A notification, *Door left open*, to every manager of the location. |
| **Water leak** | A leak sensor detects water. | A high-priority task, *Water leak: (sensor)*, and a notification to the location's managers. |
| **Power out** | A power failure alarm reports that the power is out. | A high-priority task, *Power out — check fridges and freezers*, and a notification to the location's managers. |
| **Sensor offline** | A sensor or YoLink thermometer sends nothing for 9 hours, or has sent nothing 9 hours after it was added. | A task, *Sensor offline: (sensor)*, and a notification to the location's managers. Once, until it reports again. |
| **Low sensor battery** | A sensor's battery runs low. | A task, *Replace the battery: (sensor)*, and a notification to the location's managers. Once, until the battery is replaced. |

![The Tasks page with four high-priority location tasks at North, all Pending: Temperature alert: Walk-in cooler at 46.4°F, Power out — check fridges and freezers, Water leak: Dish pit leak, and Kiosk door opened, nobody on shift](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__11-sensor-tasks.7a37890d74.png)

- **No alert spam:** the same sensor raises the same alert at most once every 30 minutes, and a door left open alerts once however long it stays open.
- **Opening up and closing down:** an opener who unlocks the door and clocks in within the wait doesn't set off an alert, and neither does a closer who clocks out and then leaves.
- **A punch left open:** someone clocked in for more than 16 hours doesn't count as on shift, so a forgotten clock-out doesn't silence after-hours alerts.
- **After a connection drop:** when YoLink comes back, Mays records what it missed at the time it happened, but doesn't alert about anything older than 15 minutes. A door that is still open is still caught. A sensor YoLink lists as offline doesn't count as reporting, so it is still flagged **Sensor offline**.
- **Unassigned sensors** never alert. Put them at a location first.

![The Edit rule window for Door left open: Trigger Integration Event, Provider YoLink sensor, Entity type Door left open, no locations or conditions picked, and a Send Notification action to Every location manager with the title Door left open and the body {{metadata.deviceName}} has been open since {{metadata.openedAtLabel}} and nobody is clocked in.](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__12-rule-editor-door-left-open.30cad1d870.png)

## Break prompts (entrance door)

When exactly one person is clocked in at the location and not on a break, and the entrance door opens and closes, Mays sends that person a notification: *Stepping out? Tap to start your break.* If they're on a break and the door opens again: *Back? Tap to end your break.* Tapping it opens their clock-in card in the Mays app, where they start or end the break. See [Taking breaks](https://www.mays.app/help/time-clock/taking-breaks).

- At most one prompt every 20 minutes per person.
- With two or more people clocked in there are no prompts, because Mays can't tell who left. The door's opens and closes are still recorded.
- The prompt is a notification from the Mays app on the person's phone. Someone without the app on their phone, for example who only clocks in on a shared kiosk device, gets no prompt.
- Door data never changes anyone's punches or breaks.
- Switch prompts off for a door with **Break prompts** in its **Edit**.

## Door activity on punches

When you edit a punch in a pay period (the pencil), the window shows **Door activity** under the breaks: each time the entrance door opened and closed during that punch, for example *Opened 2:14pm · Closed 2:31pm*, on the location's clock. Compare the door gaps with the breaks taken. See [Timesheets and pay periods](https://www.mays.app/help/time-clock/timesheets-and-pay-periods).

- It shows for people who can see sensors, at a location that has acknowledged the monitoring notice.
- For a punch that's still open, it covers up to 16 hours after the clock-in.
- A punch with a very busy door shows the first 500 events, with *Showing the first 500 events*.
- It's for reference only. Mays doesn't flag or change anything from it.

![The Edit punch window for Eli North on 10/28/2026, 9:00 AM to 3:00 PM: Breaks taken, a rest break 11:30am – 11:45am, and Door activity listing Opened 11:29am · Closed 11:30am, Opened 11:45am · Closed 11:45am, Opened 1:12pm · Closed 1:12pm and Opened 2:58pm · Closed 2:58pm](https://mays-uploads.s3.us-east-2.amazonaws.com/site/help__connect-yolink-sensors__13-punch-door-activity.5c9d0a0ec4.png)

## Locations whose punches come from 7shifts

At a location whose punches come from 7shifts, the door rules that need to know who's clocked in are off: the after-hours alert, **Door left open** and break prompts. 7shifts punches reach Mays late, so these would page your managers every morning. The doors still record opens and closes, the door activity still shows on punches, and leak, power, offline and battery alerts work as usual. **Doors & alarms** says *Door rules are off at (location): its punches come from 7shifts.* See [Connecting 7shifts](https://www.mays.app/help/integrations/connect-7shifts).

## Put a kiosk in its own location

Door rules count everyone clocked in at the door's location. If a kiosk shares a location with a store, someone working in the store counts as on shift at the kiosk, and one person at the kiosk is never alone. Give each kiosk its own location in Mays (see [Add and manage locations](https://www.mays.app/help/team-roles/add-and-edit-locations)). When a door's location has more than one position, **Doors & alarms** warns: *(location) has more than one position. Door rules count everyone clocked in there; put the kiosk in its own location to keep them accurate.*

## Disconnect

- **Admins** can disconnect any YoLink account, on its card under **Integrations**.
- **Managers** can disconnect a YoLink account that was connected for their own locations only, from **YoLink sensors for my locations**. A YoLink account an admin connected, or one that's also linked to a location they don't manage, is disconnected by an admin.
- **Disconnecting keeps your sensors and their history.** Readings, door events, alerts and break prompts stop, and the Secret Key is deleted from Mays. On **Doors & alarms** its sensors show **Disconnected**. You can still view history and download temperature logs. See [Integrations overview](https://www.mays.app/help/integrations/integrations-overview).
- **Reconnecting** with the same UAID, or a new Secret Key for the same account, carries on in the same sensors: names, settings, locations and history. Click **Reconnect** on the account's card. Managers see **Reconnect** only on accounts they may disconnect.

## Related articles

- Food safety & signage: [Temperature thresholds and alerts](https://www.mays.app/help/food-safety-devices/temperature-alerts) — Set a safe range and an alert delay for each thermometer. When a unit stays out of range, Mays creates a task at that location and notifies whoever is scheduled to work at that time (otherwise the location's managers).
- Food safety & signage: [Health-department temperature logs](https://www.mays.app/help/food-safety-devices/temperature-log-export) — Download a thermometer's temperature log as a PDF or CSV for any dates, with your license number, the safe range and a pass or fail on every row, ready to show an inspector.
- Integrations: [Integrations overview](https://www.mays.app/help/integrations/integrations-overview) — What Mays connects to — Square, Clover, Toast, 7shifts, Union POS, Google Business, Govee thermometers, YoLink sensors, Dropbox and Google Drive — who can connect them, and how to check, sync or disconnect a connection.
- Food safety & signage: [Setting up Govee thermometers](https://www.mays.app/help/food-safety-devices/connect-govee-thermometers) — Connect your Govee Wi-Fi thermometers with an API key, then give each one a location. Mays records every sensor's temperature every five minutes and watches it around the clock.
- Team & roles: [Add and manage locations](https://www.mays.app/help/team-roles/add-and-edit-locations) — Add your stores to Mays, keep their address, phone, email and time zone up to date, and find each location's billing, phone receptionist and scheduling settings.
- Account & billing: [Plans, the free trial and locked modules](https://www.mays.app/help/account-billing/plans-and-free-trial) — Every organization starts with a 30-day free trial of all plan modules, then picks Basic or Pro (or your company's own package, if Mays set up custom pricing). What each plan includes, what the add-ons are, what a locked module means, and how each location's package decides its features.
- Time clock: [Taking breaks](https://www.mays.app/help/time-clock/taking-breaks) — Start and end breaks in the Mays app, pick the right break, see when one is due, and answer the break question when you clock out.
- Time clock: [Timesheets and pay periods](https://www.mays.app/help/time-clock/timesheets-and-pay-periods) — Review every punch in a pay period on the Time Clock page — fix, add or delete punches, approve them, check warnings and hours, then close the period for payroll.
- AI & automation: [Automation triggers and actions](https://www.mays.app/help/ai-automation/automation-triggers-and-actions) — Every trigger, condition and action you can use in an automation rule, what each one does and who receives the result.
- Integrations: [Connecting 7shifts](https://www.mays.app/help/integrations/connect-7shifts) — Connect 7shifts with a Company ID and access token to bring your team into Mays, keep reading the 7shifts schedule, or move your schedule, punches and time off into Mays scheduling.

## Still need help?

Send us a support request and a real person on the Mays team will get back to you.

[Contact support](https://www.mays.app/contact?topic=support) · [Call +1 (561) 286-3939](tel:+15612863939)

Canonical: https://www.mays.app/help/food-safety-devices/connect-yolink-sensors