Hach HQ4200 - 5.3 ชาร์จแบตเตอรี่

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 3 
5.3

    

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 
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

 

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 (Ground Fault Circuit Interrupt - GFCI/GFI) 
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







    
 










    
 



 USB  USB     4 




/  LED   


 5 
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 USB 
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