How do I replace the batteries in my Water+Climate sensor? Jon Dennis Cruz April 01, 2021 10:54 Updated Unscrew the back of the sensor and remove the front cover. Your sensor requires 2 AA batteries. Related articles How do I replace my batteries? How fast might my batteries run out? How do I reset my Water+Climate sensor? How to install Doorbell Camera When does the sensor update? Comments 0 comments Please sign in to leave a comment.