Casio IT-2000W manual Sensors

2.3.12Sensors

The IT-2000 has the following three types of built-in sensors:

Illumination	Attached to the upper section of this terminal and used to sense the ambient
sensor	light intensity. It is used for the Auto Backlight Control (ABC) function. It
	cannot be controlled directly from the application.
	(For more information about the system library refer to Chapter 6 “Keyboard
	Controller”.)
Temperature	Attached to the inside of the main unit and used to detect the ambient
sensor	temperature. It is used for Automatic Brightness Adjustment (ABA) of the
	liquid crystal display. It cannot be controlled directly from the application.
	(For more information about the system library refer to Chapter 6 “Keyboard
	Controller”.)
Battery voltage	Detects the voltage levels of the main battery, sub-batteries, and card
level sensor	battery. It is used by the system to take action against low battery voltges. The
	system manages low voltage through this battery electric potential sensor.
	Applications can acquire the information from this battery voltage level sensor
	via the system library or APM BIOS.
	(Refer to Chapter 2.2.4 “Battery Voltage Monitoring Process”.)

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