HALO TSA LCD. -Sound activation: Agitates on the sound of your marker. -Lean left, paddle spins right -Lean right, paddle spins left -Two 9V operation LCD Features: -Set Timer function -Shot Counter -Motor Duration (range: 3 to 15) -Sensitivity Threshold (range: 5 to-95) -Bolt Style Selection (open/closed) -Motor Speed selection - 3 options -Timeout adjustment (range: 5 to-50)