CR2
Option 2: Stick this product on the proper flat surface by the
equipped PE form tape.Paste PE form tape on the base of
product, and then stick the product in the selected place.
Notes: Before installation, please keep the selected place tidy
and clean.
Step 3: Put 1 * CR2 battery into battery compartment of main
body.
7
Battery
Notes: Join the network before fastening this product