eResearchTechnology GmbH AM3G01 User Manual

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Peak Flow Meter AM3 - Instructions for Use for Trial xxx
Version 00.03 • Date 04NOV2013
2.5 
Power Management
Before using the AM for the first time, the batteries must be charged for  
30 minutes. 
When the batteries are low, the following message will be displayed:
Battery low!
Please connect AM3  
to charger.
How to charge the batteries:
Plug one end of the wall adapter into the USB interface of the AM3 with GSM 
option and the other end into a wall socket.
Only the original power supply delivered with the AM must be used for 
charging the device.
The internal clock will stop after about 5 days when the internal battery is 
discharged.