Newcon Optik LAM 3 IR - Manual (Page 4)

iv
 NEVER reverse polarity of the battery
 ALWAYS make sure that the device is fixed firmly
on the weapon
 ALWAYS remove battery when not in use for a long
period
 ALWAYS store in a warm dry place when not in use
 ALWAYS clean output windows with soft cloth only
 ALWAYS check the O-ring when replacing the
battery.