Raddy PT-3 Manual [EN]
Before closing battery door, make sure both gaskets are properly seated in their traces as shown in below
image. Failure to properly seal the floating thermometer will result in water leakage and damage.
To close the lid, twist the upper lid and lower lid with wrench until it is firmly locked and the key hole is
aligned. Insert the key and turn 90 degrees to lock the lid, as shown in below image.