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YoLink Relay


Product Support


Frequently-Asked Questions

Can I use the YoLink Relay to connect a louder non-smart outdoor siren?

Yes, you can use the YoLink Relay to connect an outdoor siren, provided it meets the electrical connection requirements specified in the YoLink Relay manual.

Please note that the YoLink Relay is only responsible for triggering the siren to activate or silence; it cannot adjust the volume of the siren.

If there is a power outage and the power is restored, will the YoLink Relay automatically turn back on?

You can customize the power-on behavior in the YoLink app. Go to the Device screen, tap the three dots in the upper right corner to access the Device Details screen, and select "Power on status." From there, you can set the relay to turn back on to its previous state (last state), turn all on, or turn all off.

Can I control the YoLink Relay remotely?

Yes, you can remotely turn the relay on or off using the YoLink app.

Does the YoLink Relay have scheduling and timer functions?

Absolutely! The relay has both scheduling and timer functions, which can be set up through the YoLink app.

Can I create smart scenes and automations with the YoLink Relay?

Yes, you can set up smart scenes and automations for the Relay using the YoLink app.

Does the YoLink Smart Relay support momentary function? I am thinking of using the keyfob to trigger a remote door using the smart relay as a momentary switch.

While the YoLink Smart Relay doesn't have a specific "momentary" function per se, it does support similar instantaneous switching capabilities through automation settings within the YoLink app. Specifically, you can set the minimum time it takes for the relay to turn off again once it's been activated to as little as one second. This way, it operates effectively as a momentary switch, allowing you to use the keyfob to trigger remote door access.

Is the YoLink Relay compatible with voice assistants like Alexa and Google Assistant?

Yes, the relay works with both Alexa and Google Assistant, allowing you to use voice commands to control it.

Can I integrate the YoLink Relay with IFTTT?

Yes, the relay works with IFTTT, enabling you to create custom applets for turning the relay on or off.

What is the maximum number of Controllers I can pair with a YoLink Relay?

With YoLink Control, there is no strict limit to the number of Controllers you can pair with a relay. However, for optimal performance, we recommend linking up to 128 devices.

What is the difference between the schedule and timer functions in the YoLink app?

The timer function in the YoLink app is designed for one-time events, whereas the schedule function is for setting up recurring events. Both of these settings are saved in the device itself, allowing them to function even without an internet connection.

Is there any way to configure a relay to shut something off if a condition is met? Ex, my pool pump is in a closed room, if it ever failed and leaked I’d like to shut it off automatically instead of being alerted and having to do it manually.

Yes, you can configure a relay to automatically shut off your pool pump if a certain condition is met, such as detecting a water leak. Considering that pool pumps have high starting currents, you should use a YoLink Relay in conjunction with a heavy-duty "dumb" relay to handle the pool pump's power requirements.

You can follow the instructions in the YoLink Relay manual to set up the relay system.

Additionally, you'll need a water leak sensor to detect any leaks. Once you have both the relay and sensor installed, you can create an automation rule: when the water leak sensor detects water, it will send a signal to the YoLink Relay, which will then turn off the dumb relay, consequently shutting off the pool pump.

Can the YoLink relay be connected to a pool pump?

The YoLink relay has a maximum current rating of 5 amps, which may not be sufficient for connecting directly to a pool pump. To safely connect the YoLink relay to a pool pump, you can use an intermediary, higher-capacity relay. Connect the YoLink relay to this high-capacity relay, and then connect the high-capacity relay to the pool pump.

I want the YoLink relay to be activated when any sensor is triggered, but the strategy configuration doesn't give me the option to activate it. Is there a workaround?

You can create a workaround using the YoLink App by following these steps: First, navigate to the "Smart" section and select "Scene" to set up a new scene. Within this scene, enable the relay. Next, go to the alarm strategy settings and configure it to trigger the scene you just created. Keep in mind that only one scene can be triggered per strategy to avoid potential circular issues.

Can I use a phone charger instead for power supply? Which wires should I use to obtain the correct voltage?

The YoLink relay operates on a voltage range of 5 to 24VDC. You can use a phone charger as a power supply, provided that it falls within this voltage range.

How can I use a smart relay in conjunction with a temperature and humidity sensor as a temperature controller using YoLink Control Tech?

To use YoLink Control Tech with a smart relay and temperature/humidity sensor, you'll need the YS8004-UC weatherproof temperature sensor, as it currently supports YoLink Control. When you receive the YS8004 sensor and YS5706 relay, contact YoLink customer support to update the firmware, as the necessary version isn't publicly released.

After updating the firmware, follow these steps to configure the temperature controller:

For high temperature alerts to turn ON the relay and low temperature alerts to turn OFF the relay:

1. Turn on the relay.

2. Press and hold the set button on the temperature sensor for 5 seconds until the green LED blinks.

3. Press and hold the set button on the relay for 5 seconds until the green LED blinks.

For high temperature alerts to turn OFF the relay and low temperature alerts to turn ON the relay:

1. Turn off the relay.

2. Press and hold the set button on the temperature sensor for 5 seconds until the green LED blinks.

3. Press and hold the set button on the relay for 5 seconds until the green LED blinks.

Q: Why does the YoLink Relay disconnect frequently?

A: There are two possible reasons:

Incomplete device status loading due to poor mobile phone network connectivity. Ensure that your mobile phone has a strong and stable network connection for optimal performance.

Insufficient interval time between device operations. If the device is operated too quickly or repeatedly, it may not fully respond, leading to connectivity issues. Ensure that the interval time between operations is more than 6 seconds to avoid this problem.

 Does the programming work when the internet is down?

If the internet is disconnected, remote control of the YoLink Relay through the app will not work. However, schedules and timers saved in the device itself will continue to function. YoLink Control, which allows you to use the YoLink Remote to turn the Smart Relay on or off, can also operate without an internet connection.

How do I install a fuse based on using the Yolink relay?

The fuse can be installed either preceding the relay or inserted between the relay and the equipment it controls. For a standard household service of 15 or 20 amps, with a 5A relay, customers may opt for a 7.5A or 10A fuse, respectively. This provides a margin of tolerance and safeguards against overcurrent scenarios.

How many milliamps of input current does the Yolink Relay require?

The relay necessitates an input current exceeding 300mA because the device requires this level of current to facilitate both LoRa message transmission and simultaneous device state changes. However, it does not consistently demand such a high current.