4- #150 Honey Bee Bucket AlarmNever overflow your honey bucket again. This alarm will let you know when the bucket is about to be full giving you time to stop before overfilling. This model #150 will allow your container to fill within 6 3 8" from the top before alarm sounds. You can choose from different models that satisfy the amount of fill you wish on your bucket. An advanced model will even turn an item off for you, such as extractor or pump.