Fob detectors are a very important part of any keg beer dispense system.
Fob detectors operate when a keg runs out and shut down the line to prevent it creating wasteful frothing or fobbing, it will also indicate if there are any issues within the beer line.
Where excess fob or froth has been generated this is removed by depressing the spring-loaded vent button on the top of the fob detector, exhausting the excess gas which has caused the frothing. When the fob detector fills with beer again you can resume serving.
We could not recommend the Cellar Bouy or otherwise known as Fob Detector enough and that each of your keg beer lines is fitted with a fob detector.