The SC76 is an all-in-one DMM that with a dedicated amp clamp. Use the NCV button to determine whether on not a wire or circuit is live. The high-voltage indicators alert you when hooking up to 30V or more, while the continuity indicators tell you if a circuit is open or closed. Operation of the SC76 is easy. Simply select a range and test Use annual ranging to make you think about what you're hooking up to or the added convenience and speed of auto-ranging. The display automatically shows you the appropriate range for the parameter being tested on the large LCD, An "OL" message warns you that the test is out of range for the meter.