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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Why can't I save my schedule for my smart thermostat MTS100, and it keeps showing an error code?

Please press the UP and DOWN buttons simultaneously for 5 seconds to reset the device and pair it with the hub again. 
If the issue persists, please log out and log in to your meross account and try again.

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