CS550A Features: -Circuit breaker finder. -Locates AC breakers or fuses. -No need to interrupt power. -UL rated. Product Type: -Stud Finders. Generic Specifications: -80 to 140 VAC maximum to ground. Generic Dimensions: -1.5" H x 6" W x 8.63" D. Dimensions: Overall Length - Side to Side: -6 Inches. Overall Height - Top to Bottom: -1.5 Inches. Overall Depth - Front to Back: -8.63 Inches. Overall Product Weight: -0.53 Pounds.