Follow this procedure:
Turn off the camera.
Lift up the battery compartment cover.

Remove the battery pack.
Replace the three standard AAA batteries, ensuring correct polarity.
Put the battery pack into the battery compartment.
Push down and secure the battery compartment cover. The cover makes a click when it locks in place.

Follow this procedure:
Aim the camera toward a point of interest.
Pull the trigger to freeze the image.
Pull the trigger again to return to the live image.
Follow this procedure:
Turn off the camera.
Lift up the battery compartment cover. For more information, see section 8.1 Replacing the batteries.
Remove the battery pack.
Set the temperature unit switch to the desired position:
Put the battery pack into the battery compartment.
Push down and secure the battery compartment cover. The cover makes a click when it locks in place.