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backlight goes off 2 to 3 seconds after the key is first pressed.)
• If a mode changing key is pressed while the backlight is on, the backlight
immediately goes off and the selected mode is invoked.
(4) Alarm test function
•Simultaneously press the C key and D key to test the audible alarm.
(5) Lock state reset function
•In the out-of-range lock state and decompression stop violation lock state,
simultaneously press and hold the C key and D key for 15 seconds to clear the
lock state and access the normal state.
3-2. Time Set mode
• Time Set mode is used to set the current time, the current date, and the time
format (12- or 24-hour clock).
• Time Set mode cannot be accessed until a surface interval of at least 10
minutes has elapsed.
3-2-1. Display
3-2-2. Key operations
7
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