LUWC: Ultrasonic Wave Form Concentrator (Parabolic Dish)The UWC doubles the detection range of standard scanning modules and pinpoints ultrasonic leaks & electric emissions at great distances.UWCL: Ultrasonic Wave Form Concentrator (Parabolic Dish) wit LaserThe UWCL doubles the detection range of standard scanning modules and pinpoints ultrasonic leaks & electric emissions at great distances. Includes a laser pointer for greater accuracy.