TSI Alnor 9880 Manual Del Usuario página 6

battery access cover. Replace the battery access
cover and tighten the screw.
If the batteries are installed incorrectly, damage to
the Model 9880 will not occur, but the instrument
will not function.
WARNING
The Model 9880 is only listed for intrinsic
safety when operating with four AA-size
alkaline batteries. Batteries of other types
(NiCd, carbon-zinc, etc.) are NOT acceptable
for use in a hazardous environment.
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