1. Verify that the connected load does not exceed the rated power capacity of the smart device.
2. Disconnect the load wire only (keep the other wires connected) and turn on the power. If the noise persists, it's likely originating from the load itself, and you should consider replacing the load device. If the noise stops, it suggests the issue is with the smart device. In this case, please reach out to ELEGRP's customer service for further assistance.
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How to add ELEGRP smart devices to apps including ELEGRP HOME, Amazon Alexa, or Google apps?
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Does this device record power consumption? (ELEGRP Smart Switch: SPN10, SPN30)
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What is the "Rated Impulse Voltage" for the Smart Switch? (ELEGRP Smart Switch: SPN10, SPN30)
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Can I use the Smart Switch to control high power devices? (ELEGRP Smart Switch: SPN10, SPN30)