3M WorkTunes - Attenuation (ANSI S3.19 - 1974); Output Sound Pressure Levels (SPL)

19
3M
TM
ALPHA 1100 BATTERY PACK
Install one optional Lithium-ION battery pack
as shown. Close battery door until it clicks.
See 3M
TM
Alpha 1100 Lithium-ION battery
pack for additional safety information.
Insert the micro-USB connector cable into the
micro-USB jack. Connect the other end of the
cable to a USB power source to begin charging.
The LED will blink when the battery pack
is charging, and turn solid when charging
is complete.
charging
charged
INSTALLING BATTERY:
BATTERY
LOW
CHARGING BATTERY PACK:
Lithium Ion Battery Pack (OPTIONAL)