Controls intended to be adjusted during installation or in normal use shall be provided with an indication for the direction of adjustment.

在安装或正常使用期间，打算调节的控制器应有调节方向的标示。

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In exchange for a more substantial energy-bill savings (5-10% of the summer's air-conditioning tariff), participating customers agree to an "Auto-Tune" of their Nest, a three-week adjustment period where the algorithms plan a regime that routinely rejiggers air-conditioning use during the day.

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