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IRS Troubleshooting

1. 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: some are on and others off. How do I synchronize them?

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. To fix this, 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. I can control the lamp with my App and via voice control, but I can’t control it using the wall switch. What’s going on?

1) Completely unable to use the switch to control the lamp:

  • Please double-check to ensure 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).
  • The wall switch has multiple buttons with a common input terminal. For example, in a 3-button switch, only one of the 3 buttons is connected to the Smart Switch Sub-Assembly, and the other two are simply ordinary switches. To fix this, 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. The wire of the Smart Switch Sub-Assembly cannot be combined with the wire of an ordinary switch.
  • If you connect multiple lights to a relay, and only one of the lights begins to not work properly (such as fails to start for a long time, flickers, shines at an abnormal brightness, or completely fails to turn on), then the issue is likely with the lamp itself. Replace that single lamp and the issue should be resolved.

  2) The switch can control the lamp, but it is not stable, it sometimes works and sometimes does not work:

  • Refer to the Instruction Manual to check whether the external Switch Mode is set correctly. 
  • Ensure the wiring is correct.

3) The switch cannot turn the light off:

  • Check whether the neutral and live wires are reversed.

3. My light sometimes cannot be controlled by voice control or the App, but it CAN be controlled by the external switch. What’s going on?

  • Please confirm whether the network connection to the Smart Relay is normal.
  • Please ensure the Smart Relay is not covered or obscured by metal, which will reduce the wireless signal. Please move the gateway closer to the Smart Relay or change the installation position far away from any metallic items.
  • Because the Smart Relay antenna is on the front of the device, please do not stick the front of the device on surfaces such as plasterboard, metal, concrete, etc. (Only attach the Relay via the back of the device, using the included 3M double-sided adhesive sticker.)

4. When I use the wall switch to control the lights, sometimes the light acts up. I sometimes need to press the wall switch multiple times to get the light to turn on or off. What’s going on here?

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. Please refer to the Instruction Manual to set the right mode.

5. After the In-Wall Relay Switch is powered on, I cannot control it via the wall switch for a couple of seconds. After those first few seconds, I can control it again. Is this a problem?

This is not a problem; it’s part of the safety design of our product. The In-Wall Relay Switch will 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. Please wait patiently for 5 seconds, then you can control the Relay using the external wall switch normally.

6. The In-Wall Smart Relay (model SRB01A) is a one-gang switch. Why is it displayed as a “2-gang switch” in Tuya Gateway?

Model SRB01A has the “Green Power” function (a function that Zigbee router devices must have in order to comply with Zigbee 3.0 certification), and because of this the Tuya gateway will only recognize it as a 1-gang switch endpoint. This problem is unfortunately out of our control and can only be solved on the gateway side. Please give feedback to your gateway manufacturer/distributor to solve this issue.

  • I tried to add the device to my gateway, but it failed.
  • This might be because the gateway in your home has adopted a proprietary protocol and does not support adding devices from other brands. The In-Wall Relay Switch needs to be added to a gateway that conforms to the standard Zigbee protocol. You can check to see if your gateway is compatible with our products by checking the list below:

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  •  The number of added devices has exceeded the upper limit of the gateway.
    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.
  • The device is not in pairing mode.
  • The device is too far away from the gateway, or there are obstacles obscuring the signal between the gateway and the Relay.  
  • There are too many devices nearby which are interfering with the 2.4G signal.

7. I tried to add the device to my gateway, but it failed.

  • The frequency version of the Relay is different from that of the gateway. If the Relay and gateway operate on different frequencies, then they cannot be paired together.
  •  The Relay is not in pairing mode.
  •  The Relay is too far away from the gateway, or there are obstacles obscuring the signal between the gateway and the Relay.
  •   There are too many devices nearby which are interfering with the 2.4G signal.
  •   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 Relay has been paired to another gateway. To solve this, delete the Relay from the previous gateway or restore the Relay to factory settings.
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