Datasheet
EL-USB-1-LCD
Temperature Data Logger with LCD
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Specications liable to change without prior warning Issue 3 03/2011 S.L Applies to EL-USB-1-LCD Page 3 of 5
LED FLASHING MODES
EL-USB-1-LCD features two LEDs that indicate the logging, battery and alarm status:
• The rst LED ashes red (R) to indicate that the EL-USB-1-LCD is in an alarm condition. It will ash when the logged temperature has
exceeded a Low or High alarm level.
• The second LED ashes green (G) to indicate that the EL-USB-1-LCD is not in an alarm condition.
Hold is enabled by default, which forces the logger to continue ashing the red LED after an alarm, even when the temperature has
returned to normal. This feature ensures that the user is notied that an alarm level has been exceeded, without the need to download
the data from the logger.
Hold can be turned off via the control software. The red LED will then only ash whilst the logger is in an alarm condition. When the tem-
perature returns to normal, the green LED will ash.
Additional LED modes are explained below:
Green single ash (10 seconds)
The data logger is currently logging. No alarm.
Green single ash (20 seconds)
The data logger is currently logging. No alarm. However, the battery is low and should be replaced before
logging important data.
Green single ash (30 seconds)
The data logger is not currently logging, but is primed to start at a later date and time (delayed start).
Green double ash (20 seconds)
The data logger is full and has stopped logging. No alarm.
Red single ash (10 seconds)
The data logger is currently logging. Low alarm.
Red single ash (20 seconds)
The data logger is currently logging. Low alarm. However, the battery is low and should be replaced before
logging important data.
Red double ash (10 seconds)
The data logger is currently logging. High alarm.
Red double ash (20 seconds)
The data logger is currently logging. High alarm. However, the battery is low and should be replaced before
logging important data.
Red/Green single ash (20 seconds)
The data logger is full and has stopped logging. Alarm (high, low or both).
No LEDs ash
The data logger is stopped, the battery is empty or there is no battery tted.
Green LED Red LED