Automatic Brightness Control; Keypad Backlight; Current Level; Defroster Control - Honeywell THOR VM1 Reference Manual

Automatic Brightness Control

When the Thor VM1 is equipped with an outdoor display, automatic brightness control can be enabled. When enabled,
display brightness is based on ambient light detected by the ambient light sensor, located near the top right of the display. The
default is disabled. To enable, check the Enable automatic brightness control checkbox and specify the thresholds for
display backlight transition.
When enabled, the thresholds can be entered for display brightness transitions.
When a low level of ambient light is detected, the display backlight is set to low level.
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When the ambient light exceeds the threshold specified in Low to medium light level (%), the display backlight is
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automatically increased to a medium level.
When the ambient light exceeds the threshold specified in Medium to high light level (%), the display backlight is
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automatically increased to a high level.
Likewise if the Thor VM1 is returned to a lower ambient light area, the display backlight automatically transitions to the
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appropriate lower display backlight level.

Keypad Backlight

By default, the keypad backlight follows the display backlight. If the display backlight is on, the keypad backlight is on.

Current Level

Current levels of LCD brightness and ambient light are displayed as a percentage. Ambient light level is detected by the light
sensor, located near the top right of the display.

Defroster Control

Enable the touch screen defroster, if installed, and set the trip point. Settings are ignored if the defroster is not installed.
If a defroster is installed, the defroster can be switched between the Enabled and Disabled states using the check box. The
default is Disabled (unchecked).
Specify the Defroster trip point. The default trip point is 40ºC/104ºF.
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