Title Control Knob Title Control Knob Read full description Read full description This product is available to buy from one of our many retail partners online and instore: Features and Benefits Technical Specifications Features and Benefits Technical Specifications Features and Benefits Full description Compatible with: Heartbeat 339, Black Beauty 341, Heartbeat 425, Logsensation 736UN Technical Specifications Product Identification Product Model Number 0520799 Features and Benefits Full description Compatible with: Heartbeat 339, Black Beauty 341, Heartbeat 425, Logsensation 736UN Close Technical Specifications Product Identification Product Model Number 0520799 Close