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当AA电池电源较低时，将显示低电池图标。Whenever the thermostat detects low battery voltage from the AA batteries, the low battery icon will begin flashing on the screen ftor 21 days (if the batteries are not changed).If the batteries are not changed 22 days after the thermostat detects low battery voltage, the thermostat screen will only show the flashing battery icon until buttons are pressed.If the batteries are not changed 43 days after the thermostat detects low battery voltage, the thermostat screen will only show the flashing battery icon until buttons are pressed and the set points will offset to 85°F/29°C in cooling and 55°F/13°C in heating.在此阶段，可以暂时进行设定点更改，但是设定点将在4小时后变回默认值。恒温器将继续执行低电池闪烁，温度偏移状态，直到达到内部电压阈值。当达到恒温器内部电压阈值时，将打开所有继电器，并且恒温器将无法操作，直到安装新电池为止。
T625-2-安装手册
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