Other functions
LCD backlight
• LCD backlight is activated when or any key is pressed. The backlight will be turned off in 15 seconds
after all keys are released.
• LCD backlight will not operate when battery is low.
Low battery detection
Battery voltage is checked every minute. When the battery voltage drops to a certain level, the Low-Battery
warning indicator appears.
• The thermostat functions normally during low battery. However, user must change the batteries as soon
as possible before the battery is too weak for the normal operation to be assured.
• When you change the batteries, you have about 30 seconds to to do so without losing your settings.
Sleep Mode
Press and hold and for 3 seconds simultaneously to enter the Sleep mode. All the functions will be
paused to save battery power. While in sleep mode:
• The LCD display will be blank.
• All output from the Control Unit will be turned off immediately.
Press any key to wake up the RT310RF and cancel SLEEP mode.
TESTING/PAIRINGTESTING/PAIRING
3 Sec
3 Sec
TESTING/PAIRINGTESTING/PAIRING
Press any button to stop
the Sleep Mode
Sleep Mode On Sleep Mode O
Temperatures outside operating range
Temperatures below 10 °C are displayed without the leading ‘0’. Temperatures exceeding the measurable
range will be indicated by ‘HI’ for temperatures above the upper limit, and ‘LO’ for temperatures below
the lower limit, as shown in the images.
12 RT310RF Installation Manual
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