This document summarizes common problems you may encounter in using In-Wall Relay Switch, their causes and solutions to them.
1. What should I do if the group lights cannot be controlled by the wall switch?
Problem description: I installed a Smart Switch Sub-Assembly and several Smart Relays to control a group of lights with a 1-gang switch. When I use the wall switch to control the group lights, the group lights are not synchronized.
Causes: This issue occurred because the initial switching states of the relays were inconsistent; therefore, when you control the group of lights via the wall switch, the lights are out of sync.
Solutions: To fix this issue, use the App on your phone to turn all of the lights to the same state (either on or off), and then use the wall switch to control them. They should be all in sync now.
2. What should I do if my light cannot be controlled using the wall switch?
Problem description: I could control the lamp with my App and via voice control, but I could not control it using the wall switch.
Causes:
- The wiring is incorrect.
- The wire of the Smart Switch Sub-Assembly isy combined with the wire of an ordinary switch.
- The light itself is faulty. A Smart Relay is connected to multiple lights, among which one is faulty (such as failing to start for a long time, flickering, shining at an abnormal brightness, or completely failing to lighten up). As a result, the light cannot be controlled using the wall switch.
Solutions:
- Check whether the wiring is correct. Note that when Smart Switch Sub-Assembly is connected to a 1-gang switch, the switch must be connected to SW1 external switch jack (not SW2).
- Connect the other two buttons to the Smart Switch Sub-Assembly as well, or replace the switch with one that has independent input and output for each gang.
- Replace or remove the single faulty light.
3. What should I do if the light cannot be turned off using the switch?
Problem description: I could turn on the light using the Switch but I could not turn the light off using it.
Causes: The neutral and live wires are reversed.
Solutions: Connect the neutral and live wires correctly.
4. What should I do if my light can be controlled by the external switch but cannot be controlled by voice control or the App?
Problem description: My light sometimes could not be controlled by voice control or the App, but it could be controlled by the external switch.
Causes: The Smart Relay might have poor signals.
Solutions:
- Check whether the network connection to the Smart Relay is normal.
- Check whether the Smart Relay is covered or obscured by metal, which reduces the wireless signal. Remove the obstruction if any.
- Move the gateway closer to the Smart Relay or change the installation position to somewhere far away from any metallic items.
- Attach the Smart Relay only via its back using the packaged 3M double-sided adhesive sticker.
5. What should I do if lights can be controlled only after I press the switch multiple times?
Problem description: When I used the wall switch to control the lights, sometimes the light acted up. However, sometimes, I needed to press the wall switch multiple times to get the light to turn on or off.
Causes: The In-Wall Relay Switch supports 3 Switch Modes. This issue might be because the Switch Mode does not match the actual external switch type：
- Toggle Switch (Default): Device changes status when you flip the switch.
- Toggle Switch (Sync): Device status changes when you press the ON or OFF button.
- Momentary Switch: Device status changes after you press the switch but resumes after you release the switch.
Solutions: Set the switch mode correctly based on the actual requirements.
6. The In-Wall Relay Switch is sometimes out of control for the first few seconds. Why is that?
Problem description: After the In-Wall Relay Switch was powered on, I could not control it via the wall switch for a couple of seconds. After those first few seconds, I could control it again.
Causes: This is not a problem; it’s part of the safety design of our product. The In-Wall Relay Switch does not respond to any external wall switch signal within the first 5 seconds following power-on, in order to prevent the current impact and interference that occurs at the moment of power-on.
Solutions: Wait patiently for 5 seconds, then you can control the Relay using the external wall switch normally.
7. What should I do if a one-gang switch is displayed as a “2-gang switch” in Tuya Gateway?
Problem description: The In-Wall Smart Relay (model SRB01A) was a one-gang switch. However, it was displayed as a “2-gang switch” in Tuya Gateway.
Causes: Model SRB01A has the “Green Power” function (a function that Zigbee router devices must have in order to comply with Zigbee 3.0 certification). Because of this, the Tuya gateway recognizes it as a 1-gang switch endpoint. This problem is unfortunately out of our control and can only be solved on the gateway side.
Solutions: Submit feedback to your gateway manufacturer/distributor to solve this issue.
8. What should I do if the device cannot be added to my gateway? (Zigbee)
Problem description: I tried to add the In-Wall Relay Switch (Zigbee) to my gateway. But failed.
Causes:
- The gateway in your home has adopted a proprietary protocol and does not support adding devices from other brands.
- The number of added devices exceeds the upper limit of the gateway.
- The device is not in pairing mode.
- The device has poor signals because of the following reasons: It is too far away from the gateway, there are obstacles obscuring the signal between the gateway and the Relay, or there are too many devices nearby, interfering with the 2.4G signals.
Solutions:
- Use a gateway that conforms to the standard Zigbee protocol and then add the In-Wall Relay Switch. Check whether your gateway is compatible by referring to Zigbee gateways supported by In-Wall Relay Switch:
- The upper limit of devices that can be added to gateways varies from brand to brand. For example, Philips can add up to 14 end-devices and can support even more once additional router devices are added to the network. The maximum number of child devices is 50. Contact the gateway provider to check the upper threshold. If the number is exceeded, delete other devices first.
- Ensure that the device is in pairing mode. Short press the device button to restart it or press it for 5s to reset the configurations. In pairing mode, the device indicator blinks blue.
- Move the device close to the gateway and try again.
9. What should I do if the device cannot be added to my gateway? (Z-wave)
Problem description: I tried to add the In-Wall Relay Switch (Z-Wave) to my gateway. But failed.
Causes:
- The frequency version of the Relay is different from that of the gateway. As a result, the Relay and gateway cannot be paired correctly.
- The number of devices added to the gateway has reached the upper limit (this limit varies from gateway to gateway, and brand to brand.)
- The device is not in pairing mode.
- The Relay has been paired to another gateway.
- The device has poor signals because of the following reasons: It is too far away from the gateway, there are obstacles obscuring the signal between the gateway and the Relay, or there are too many devices nearby, interfering with the 2.4G signals.
Solutions:
- Ensure that the In-Wall Relay Switch and gateway operate on the same frequency, for example, 908.4 MHz or 916 MHz for the US version.
- The upper limit of devices that can be added to gateways varies from brand to brand. Contact the gateway provider to check the upper threshold. If the number is exceeded, delete other devices first.
- Ensure that the device is in pairing mode. Short press the device button to restart it or press it for 5s to reset the configurations. In pairing mode, the device indicator blinks blue.
- Delete the device from the previous gateway or restore the factory settings by pressing the device button for 5s.
- Move the device close to the gateway and try again.