Sennheiser FLX 70 User Guide

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Do not heat above 40 °C (104 °F), e.g. do not expose to 
sunlight or throw into a fire. 
 
Do not expose to moisture. 
 
Do not short-circuit. 
 
Do not mutilate or dismantle. 
 
Store the units/re-chargeable batteries in a cool and dry 
place at room temperature (approx. 20 °C). 
 
Only charge rechargeable batteries with the appropriate 
Sennheiser Communications chargers. 
 
When not using rechargeable batteries for extended peri-
ods of time, charge them regularly (every six months for 
about 1 hour). 
 
Only charge rechargeable batteries at ambient tempera-
tures between 10 °C and 40 °C. 
 
Do not charge the rechargeable battery if the unit is obvi-
ously defective. 
 
Return defective units or units with defective rechargeable 
batteries to your specialist dealer.