Extech Instruments RHT50 User Manual page 4

LED STATUS GUIDE
Record
Green
•
* Connect the datalogger to the PC and download data
•
** Replace the battery, data will not be lost
•
*** Logging will stop, data will remain in memory
•
**** Occurs if an alarm is exceeded
•
***** Flash cycle time is set from the software
LEDs
Alarm
No LED
No LED
No LED
Green flash (single):
Green flashes (five)
Green flashes (six)
Red double flash every 30 sec.
Red single flash
****
Red flashes (six)
Red
Yellow flash every 20 seconds Memory full *
Yellow
Meaning
Logging not started
Logging stopped *
Battery discharged **
Logging indication *****
Reset
Start Logging
Logging, alarm event
Stop logging *
4
Low battery ***
RHT50 V2.0 8/10