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LCD Backlight:
• LCD backlight is activated when BL/FROST or
any key is pressed. The backlight will
automatically turn off in 5 seconds after all keys
are released.
• LCD backlight will not operate when battery is low.
• LCD backlight is illuminated throughout the
Clock, Program, and Temporary Override
Temperature settings.
Low-Battery Detection:
Battery voltage is sampled
every minute. When the
battery voltage drops to a
certain level, the Low-Battery
warning indicator appears.
• The control centre functions normally during battery
low. However, user must change the batteries as soon
as possible before they are so weak that normal
operation cannot be assured.
• Battery voltage is determined as "low" when it is less
than or equal to 2.6V. It is determined as normal
when it is higher than or equal to 2.8V, i.e. Low-
Battery indicator must come out when battery voltage
is <= 2.6V, and must be turned off when battery
voltage is >= 2.8V.
• Battery voltage is only sampled in Normal mode
and when LCD backlight is turned off.
Sleep Mode:
• Press and hold
and
in Normal mode for 3
seconds simultaneously to enter the Sleep mode.
• All the functions will be paused to save battery power.
• The whole LCD will be blank.
• Output will be turned off immediately.
• Press any key to wake up the unit.
• Clock is continuously running in background.
Specification
Switch Rating
: Volt free selectable
230V AC 16 (8)A max
Power Supply
: 2 x AA size Alkaline batteries
Operating Temperature
: 0˚C - 50˚C
Temperature Setting Range
: 5˚C - 35˚C in 0.5˚C steps
Storage Conditions
: -20˚C - 55˚C to 90% RH/non
condensing
Frost Protection Temperature
: 5˚C
Battery Low Warning
: 2.6 - 2.8V
Temperature Control Accuracy
: +/- 0.5˚C at 25˚C
Operating Humidity
: 0 to 90% RH/non condensing
Time Display
: 12 hour/24 hour
Clock Accuracy
: +/- 1 min/month
Protection
: Auto cut off at over 35˚C
Memory
: Memory hold up: 5 minutes
Back Light
: EL Panel blue colour
Agency Approval
: CE
Micro disconnection on operation : Type 1.B control action
Rated Impulse Voltage
: 4kV
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