Changing the batteries

  1. Move the window handle into the locking position.
  2. Gently lift the bottom of the casing cover, slide downwards and remove.
  3. Insert the batteries into the battery compartment.
  4. Place the casing cover on the window handle and push upwards until the casing cover clicks into place.
  5. Check the "locked" function.
  6. Check the "unlocked" function.