Upgrade firmware for your HomeKit devices! We have released new firmwares for HomeKit devices to drastically improve the connection stability. Please refer to www.meross.com/support/FAQ/447.html and upgrade your HomeKit devices.
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Please check the indicator light. If the light is off:

• Make sure to restore power to the wall switch of the circuit breaker.
• Make sure the wall switch is wired correctly.
• Ensure that the main switch is installed in an electrical box with live and neutral wires. If you are not sure, please switch the installation position of the host and additional switches and try again.